The Most Common Reasons Why a Transmission Slips

Updated on January 27, 2019
eddiecarrara profile image

Eddie spent 35 years in the automotive business with Honda. He is an ASE Certified Master Technician and has bruised knuckles to prove it.

We all know what an automatic transmission is, basically—very basically, at least—so I'm not going to bore you with the details about how it converts power from your engine into power at the wheels. But you should know that the process involves plenty of hydraulic fluid as well as gears and clutches.

If you don't know why your car’s transmission is slipping, I just might have the answer, though you may not want to hear what I have to say.

The cause of a slipping transmission will depend on the type of transmission you have in your vehicle. There are three types of transmissions: automatic, standard (or “manual”), and CVT (continuously variable transmission). I will discuss the two most common types, automatic and standard.

Why Is My Automatic Transmission Slipping?

If you have an automatic transmission and it "slips" while you are driving it—that is, the car engine revs without the power going to the wheels—the most common cause (though not the only possible cause) is low transmission fluid. If the slipping is caused by low fluid, it will get worse as the transmission gets hotter.

Why Is My Manual Transmission Slipping?

A standard (“manual”) transmission uses fluid too, but leaks aren’t a common issue; a standard transmission could lose all its fluid and never slip at all, though eventually, it would lock up while driving down the road. If you have a standard transmission, and it’s slipping—the engine revs but it doesn’t transmit power to the wheels—the problem is usually in the clutch.

Further down in the article, I discuss how to diagnose this problem.

Sounds Like Low Transmission Fluid to Me

What to Do If Your Automatic Transmission Is Low on Fluid

The next question is, why? Probably because you have a leak. Maybe you have noticed red transmission fluid in your driveway or your parking spot at work, but it didn’t occur to you that it came from your car. The cause of your leak is probably a failure of one of the seals that keep the oil inside the transmission (though there are other places the transmission might leak). How many seals the transmission has depends on whether you have a front-wheel-drive, four-wheel-drive, or rear-wheel-drive car.

If you do have a seal that is leaking, and you catch it in time before it damages your transmission, there’s a chance it might be relatively cheap to repair. Seals themselves are not expensive parts, but depending on where they are located, it might take a lot of labor to replace them.

Transmission Axle Seal: A Common Site for Leaks

Click thumbnail to view full-size
An axle seal might cost you about $20. It's the labor that kills you. An axle seal that is not leaking fluid.Axle seal inside the transmission, with the axle removed.A typical axle seal leak.This axle seal is just starting to leak.A great view of the axle going into the transmission. You can see the transmission fluid starting to leak down the transmission case.
An axle seal might cost you about $20. It's the labor that kills you.
An axle seal might cost you about $20. It's the labor that kills you. | Source
An axle seal that is not leaking fluid.
An axle seal that is not leaking fluid.
Axle seal inside the transmission, with the axle removed.
Axle seal inside the transmission, with the axle removed.
A typical axle seal leak.
A typical axle seal leak.
This axle seal is just starting to leak.
This axle seal is just starting to leak.
A great view of the axle going into the transmission. You can see the transmission fluid starting to leak down the transmission case.
A great view of the axle going into the transmission. You can see the transmission fluid starting to leak down the transmission case.

If you have the leak checked out by your mechanic, and he tells you it’s just your axle seal, it could just cost you for a couple hours of labor, and you could be back on the road in a few hours if the parts are readily available. Axle seal failures are common, and the dealer will usually have those seals in stock. But if it's your input shaft seal, plan on leaving your car for a day or two, and expect the labor cost to be upwards of eight to ten hours.

Input Shaft Seal: Another Site for Leaks

Leaking input shaft seal.
Leaking input shaft seal.

This photo shows an input shaft seal leak. To replace this seal, the transmission needs to be removed from the car; this job can get costly.

Be sure to check your owner's manual on how to check your transmission fluid.
Be sure to check your owner's manual on how to check your transmission fluid.
Typically you fill the transmission through the dipstick tube, using a small funnel.
Typically you fill the transmission through the dipstick tube, using a small funnel.

Checking and Topping Off Automatic Transmission Fluid to Prevent Slipping

If your transmission is leaking, you will want to fix it. Meanwhile, if you must drive a car with a leaking transmission, you should top off the fluid.

Check your owner’s manual to see exactly how you should check your transmission fluid level. Some manufacturers will want you to check the transmission fluid level when the engine is warmed up and running with the transmission in park, other manufacturers like Honda will have you check it with the engine warmed up but not running. So be sure to read your owner's manual, DON'T GUESS!

If your transmission fluid level is low and not showing on the dipstick, add transmission fluid--the proper transmission fluid. Each car manufacturer uses a specific fluid. If you use the wrong fluid, you could damage your transmission internally, so again, check your owner's manual. Fill it to the top line on the dipstick and then drive it to your mechanic.

Note: Sometimes when an automatic transmission is low on fluid and you top it off, air pockets develop inside the transmission that keep the fluid from getting to all the parts of the mechanism. After adding the fluid, I suggest that while the car is running, you move the shift lever through the different gears on the shifter selector, and then check the fluid again. Running the shifter through the gears redirects the fluid to different parts of the transmission and removes the air pockets. You may have to do this procedure several times, or even drive the car around the block, and then recheck the fluid level.

Note: I do not recommend using additives that are supposed to stop leaks; they can plug up the transmission. Use the automatic transmission fluid your car manufacturer makes.

How to Check Your Transmission Fluid

Other Fluids That Leak From Cars

If you are concerned about other fluids besides automatic transmission fluid that seem to be coming out of your car, here's some useful advice.

Clutch disc and pressure plate. The clutch looks like it blew apart. If you ride your clutch it may look like this.
Clutch disc and pressure plate. The clutch looks like it blew apart. If you ride your clutch it may look like this.

Common Cause of Manual Transmission Slippage: Worn-Out Clutch

If you think your clutch is starting to slip, you can try a stall test. Put your car in third gear and try starting off like you would normally, as if you were in first gear. If your clutch is working properly, letting the clutch out all the way should stall the car. If, however, the clutch is slipping, the engine RPMs will rise, the car will slowly start rolling, and you will have a smell like burning paper coming from the engine compartment. When a clutch starts slipping you will smell it. It’s like the smell of overheated brakes.

There are many reasons why a clutch would slip, but the most common reason is that the clutch is worn out. A clutch disc can last anywhere from 20,000 to 200,000 miles—it all depends on the way you drive—but like a brake pad, it’s a consumable item, and will be used up eventually, leaving the parts grinding metal-on-metal. If the clutch disc is worn out, you need to replace it, generally also along with the clutch plate and one or two bearings. If you don't replace a worn clutch in time, you might have to replace the flywheel (the big chunk of metal next to it) as well.

Riding your clutch—that is, leaving your foot on the clutch pedal when you aren’t using it—can really eat up a clutch disc fast, especially if you drive in hilly areas. Just being a newbie and learning to use a clutch for the first time can cause a lot of wear and tear. Learning to drive on a standard transmission can end up costing you money if you don't get the hang of it quickly.

Then again, clutches slip for reasons not related to wear and tear or abuse. If your input shaft seal is leaking gear oil onto the clutch disc, this could very well cause a slipping clutch. Another common reason for a slipping clutch is a faulty or damaged pressure plate. The pressure plate is operated by a high-tension spring. If for some reason the pressure is not distributed evenly over the clutch disc, the clutch will start to slip.

Blown Clutch: It's Completely Worn Out

I Appreciate Your Questions!

There are many possible reasons for a slipping transmission and I could not cover all of them above. If you have any questions just leave them in the comment box below.

This article is accurate and true to the best of the author’s knowledge. Content is for informational or entertainment purposes only and does not substitute for personal counsel or professional advice in business, financial, legal, or technical matters.

Questions & Answers

  • I have a 2011 Chevy Silverado 2500 HD. This morning, as I was driving about 30 mph, the engine started to roar as if in neutral. It did this about three times for about a mile until I could get home. I later drove around the neighborhood and it does seem to make a vibrating noise at times, and it also seems like it is shifting at times. The fluid level seems normal. It is a used vehicle that we purchased three months ago, so I know nothing about the history. What could this be?

    If the fluid level is OK, it's possible you may have a solenoid or valve that is sticking or not working properly.

  • I have Lexus ES 2011. The auto transmission is having some issues with hanging and then suddenly shifting with a slight jerk move from 2nd to 3rd or 4th gear. This happens in between 40, sometimes 60 to 65 KM/H. Also, the RPM needle sometimes goes slightly up or down in a shaky movement by itself. Any suggestions about what it could be?

    You should maybe have the transmission serviced, or you can check the fluid level and overall condition.

  • Can I use Valvoline CVT Full Synthetic Continuously Variable Transmission Fluid in my 1999 Mercedes Benz automatic transmission?

    No, use the recommended Mercedes Benz transmission fluid.

  • I have 2012 Silverado, and the transmission slips while driving. If I stop and restart the engine, it drives fine. Do you have any idea what this could be?

    It sounds like something electronic, like a solenoid or valve, so it could be a quick fix.

  • Is there any chance to fix and recover my slipping transmission instead of purchasing a new one?

    If your transmission is slipping, start with the basics. Check the fluid level and condition, address as needed. If the check engine light or check transmission light is on, have the codes pulled, it will point you to what is going wrong with the transmission. Sometimes a filter and fluid change can correct slipping issues, sometimes the problem will need more diagnosis.

© 2011 Eddie Carrara

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    • eddiecarrara profile imageAUTHOR

      Eddie Carrara 

      13 hours ago from New Hampshire

      Hi Mike,

      That's really weird, it sounds like you're losing pressure to the first clutch. It's possible you have a sticking valve inside the valve body. If you have a transmission specialist near your home you could schedule a road test with the shop, they may be able to tell you the issue without diagnosing it. Keep me posted on what you decide to do, thanks.

    • eddiecarrara profile imageAUTHOR

      Eddie Carrara 

      13 hours ago from New Hampshire

      Hi Old Salty,

      How can the transmission fluid be dirty if they just replaced it 5 days ago? I really think you need a second opinion.

      What is happening when you can't go over 10 mph? Are the rpm's going up, is it bucking? Give me more details on what is happening when this happens, thanks.

    • profile image

      Old Salty 

      47 hours ago

      I have a 2011 GMC Yukon XL with a5.3 liter engine with113,000 miles. About a month ago thought transmission was slipping a little climbing hill getting on highway about 50mph. Got home went to check fluid and fill pipe came out with stick about 14” long .Not sure how long it has been broken. Last service was a oil change about 3 months ago Called dealer about it as they did a GM issued repair to prevent such damage in 2016. Stopped driving and towed to dealer . Advised not to drive in rain to dealer. Although we have had the rainiest 2 months in history the last two months. Dealer repaired pipe under previous work order and changed transmission fluid . Asked to check transmission as did not want any issues going forward as I did not know how long pipe was broken and what got in there or leaked out . Drove home 5 days later pulled out of driveway and would not go over 10mph. Towed back to dealer . Transmission gonzo. Says not related to broken pipe or fluid flush. Now Says there was no water in fluid but was very dirty and discolored. Never said anything at time of repair. Wants 4500 to replace transmission . Would appreciate any advice you can give me going forward . Thank you.

    • eddiecarrara profile imageAUTHOR

      Eddie Carrara 

      2 days ago from New Hampshire

      Hi Gina,

      I recommend you start by fixing the EVAP canister leak first and then clear all codes to see if any of the transmission codes come back. Keep me posted on what you decide to do and what you find out, thanks.

    • profile image

      mike bobier 

      2 days ago

      I have a 2008 chevy Silverado. while sitting to either turn usually to the left, my truck suddenly makes a grinding noise, a clunk and then it wont move until I put it in neutral and the griding noise stops and then I can put it back in gear and it is fine. sometimes this takes a couple of times putting it in neutral. sound transmission to you

    • profile image

      Gina Marie 69 

      6 days ago

      Yes Eddie, the check engine light is on.

      I also went by Auto Zone last night and they added transmission fluid, and did a scan, they said it mentioned an "Evaporative Emissions Purge Solenoid"

      On another scan done by my friend prior to Auto Zone the following codes were:

      p1705

      Tranaxle control Module A/T Gear position Switch Circuit short

      p0700 Transmission control system

      p1457 EVAP control system leak detected (canister area)

    • eddiecarrara profile imageAUTHOR

      Eddie Carrara 

      7 days ago from New Hampshire

      Hi Kim,

      I think you're right, I think you may need a minor adjustment on the servo, it sounds like there may be too much or not enough pressure in the servo to cushion the shift. If you know of another transmission shop that is reputable, I highly recommend you get a second opinion. Keep me posted, thanks.

    • eddiecarrara profile imageAUTHOR

      Eddie Carrara 

      7 days ago from New Hampshire

      Hi Gina,

      Is the check engine light on? It may not be a transmission issue, it could possibly be an engine skip or misfire, they feel very similar. Let me know if the check engine light is on, thanks.

    • eddiecarrara profile imageAUTHOR

      Eddie Carrara 

      7 days ago from New Hampshire

      Hi Deanna,

      The first step is to identify what is leaking, once you have the leak fixed the transmission will stop slipping. The transmission is slipping because the fluid is low. Keep me posted on what you find, thanks.

    • profile image

      Deanna 

      7 days ago

      Hi, I have a 2006 New beetle Bug 2.4 automatic. It's started to slip on 1st and 2nd gear then the RPM shoots up and goes back down and I am leaking fluid that looks redish dark. I am hoping i just have to put more transmission fluid but the leaking do sent sound good. Any advice very much appreciated. Thanks

    • profile image

      Gina Marie 69 

      8 days ago

      Hi,

      I have a 2002 Honda Accord with a rebuilt transmission...

      I noticed that when I am on the highway, going into the 55-60mph range, the car starts to buck, then stops as I slow back down...

      It sometimes shifts roughly in lower gears as well, or so it feels...

      I am clueless and do not want a mechanic to take advantage of my ignorance. lol

      Could this be a transmission issue? even with a replacement? it was a used one for $650 the original owner said. Please advise.

      #singlemomissues

    • profile image

      Kim 

      11 days ago

      I have a 2007 4X4 Ford Ranger (186000 Km on it and I bought it new). The automatic Transmission fluid was leaking so I took it to the Tranny shop and they changed two Servo Caps and put in a new TR Sensor. Now when I put the truck in "Drive" it doesn't always go into gear right away and revs and then "bangs" into first gear. Once it is engaged it seems to shift normally through the other gears when on the highway. If I put it into 2nd instead of Drive when starting out, it seems to go into gear fine so not sure what is going on with it. They did something to the "shifting" mechanism as well and it seems rather loose to me. Took it back to the Tranny place and talked to them about it and they said I should tear the whole transmission apart and rebuild it but my intuition is saying they didn't do something properly and it is an easy fix and I don't think spending $3000.00 on a rebuilt transmission is necessary. My next option (which I will probably take) is to take it to another shop for a second opinion but came across your site so thought I would see what you had to say about it. Thanks.

    • eddiecarrara profile imageAUTHOR

      Eddie Carrara 

      2 weeks ago from New Hampshire

      Hi Hudginsjp,

      Sorry to hear about the troubles you're having. It sounds like your clutch is slipping when it gets hot, it's the only reason for a standard transmission to slip. I recommend you have it replaced by a reputable shop. Let me know if you have more questions, thanks.

    • profile image

      Hudginsjp 

      2 weeks ago

      I have a 1998 ford contour 5speed and a few days ago it slipped in 5th gear.

      I didnt know it was slipping until today.

      What it was doing was if while in 5th if i pressed the gas to accelerate too hard the rpms would shoot up really high but it didnt feel like it went to neutral because it was still accelerating just not like it should for the rpms. Not knowing what was happening i kepted on the gas and as it sped up the rpms came down and they met in the middle so at 45mph i hit the gas hard and the rpms went to 6k but but the car was eccelerating like i had only slightly pushed the gas but once i hit 55mph the rpms at 4.5k then at 65mph the rpms at 3.5 which is normal. This happened about 4 times over the last 2 or 3 days and i couldnt figure it out. Then today i drive it to visit my wife 30 min one way and everything is fine there and back. But a few hours latter i go to drive it again And it has very little acceleration... im thinking its out of gas and put half a tank in but when i go to leave the gas station i can not press the gas pedel more then a baby toe of pressure or the rpms shoot up and the car wont accelerate at all once the rpms go up and its now happening in all the gears. The rate of acceleration is about 0 to 60 in 5 minutes and im not exaggerating. Trust me everyone on the highway was letting me know as i was trying to get to speed to get home. I got the car to go 70mph wjth normal rpms by very very slowly accelerating but the car is not drivable like this. I just looked it up and read that its the clutch slipping and so i check the clutch as follows. Start car, place in 1st, pull handbrake, dump clutch with no gas and the car stalled right out. I tried this in 2nd gear as well and the car stalled out.

      Please help me, im currently homeless and living in this car and i need to be able to get to work or ill be homeless and carless and no way to fix either with out my job.

    • eddiecarrara profile imageAUTHOR

      Eddie Carrara 

      3 weeks ago from New Hampshire

      Hi Rob,

      After eating at Denny's you may have to .... never mind lol. If the trans only slipped once it may not even be the transmission you felt slipping. If it continues to happen I recommend having it checked out but I don't think you should be worried about it right now, but I would be worried about your choices of places to eat lol.

    • profile image

      Rob 

      3 weeks ago

      Hi Eddie,

      I have a 1997 328i, i felt the tranny slip about 2 months ago while exiting the parking spot at Dennys. It has only happened once and the fluid level turned up okay, could the tranny be taking a crap or did i eat to much at Denny's.....lol She has 150k miles on her.

    • eddiecarrara profile imageAUTHOR

      Eddie Carrara 

      4 weeks ago from New Hampshire

      Hi Tombiz,

      I kept reading this question over and over and I'm not really sure what you're asking. Could you try to explain the issue in more detail?

    • eddiecarrara profile imageAUTHOR

      Eddie Carrara 

      4 weeks ago from New Hampshire

      Hi Dave,

      Are you sure it's no an engine skip or misfire? Another reader Joe just had a similar issue and he found deteriorated coils. I recommend you inspect for an engine skip/misfire first and let me know what you find, thanks.

    • eddiecarrara profile imageAUTHOR

      Eddie Carrara 

      4 weeks ago from New Hampshire

      Hi Garry,

      I think you have an internal leak and once the transmission warms up the metal expands and temporarily fixes your issue.

    • eddiecarrara profile imageAUTHOR

      Eddie Carrara 

      4 weeks ago from New Hampshire

      Hi Joe,

      That's great news! Sometimes a skip in the engine will seem like a transmission slip, the problems are very similar. I'm glad it all worked out, the coils and plugs are a lot less cash than a transmission lol. Thank you for coming back to post your findings, this really helps other readers with similar issues :)

    • eddiecarrara profile imageAUTHOR

      Eddie Carrara 

      4 weeks ago from New Hampshire

      Hi Tom,

      I recommend you change the transmission fluid to see if the problem persists. It sounds to me like there is some debris clogging up one of the ports or solenoids. Is the check engine light on? If so, the computer has stored a transmission code and it just needs to be diagnosed.

    • profile image

      Tom 

      4 weeks ago

      My honada while driving is reving out.

      I stop it turn off the car.

      After 15 seconds i start it again and its drive and change out nicely.

      But after a few miles up the road it start to rev again i repeat the process.

      My mechanic add a few bottles of oil and we test drive it same results so he said the transmission need to change.

      With your experience could this be something else?

      I change it a few year back rebuild it.

      Atlease so they say.

      What you think?

    • profile image

      Joe 

      4 weeks ago

      First off, thank you so much for all your help. A misfire was the problem. I pulled the coils and they looked worse than the ones I replaced?! All but one was corroded and falling apart. The plugs did not look bad at all to me but just to sure I replaced them as well. I upped the quality on these parts and my car ran like a champ. I waited a few days to post to be sure but I am certain the issue has been resolved.

    • profile image

      Garry 

      4 weeks ago

      I have a 1995 dodge ram 1500 1st gear slips in and out till it gets warm and then it shifts fine but the rest of the gears are good what would cause this a bad band or sylnoid. It had low fluid but its been sitting 9 hours not 1 deop of fluid yet has leaked so i dont think it would be a bad seal or leak in the lines anywhere?

    • profile image

      Dave 

      4 weeks ago

      Eddie, My '03 Jeep Liberty 4WD 4 speed AT just developed an atypical (to me) slipping problem. Fluid looks great and I'll check the level today. No leaking evident. It has a very short period slip-like impulse maybe a second in duration. I can't tell for sure but it doesn't seem to be at a natural shift point, e.g. when going uphill and it may want to downshift. I can be on level roadway when it happens. It may be starting a shift sequence then stopping or a slip that ends abruptly. Ideas?

    • profile image

      Tombiz 

      5 weeks ago

      On my 2004 Ford Taurus it has 115,000 miles when turning the car has no power and when it finishes turning it will feel like it pops back into gear and goes

    • eddiecarrara profile imageAUTHOR

      Eddie Carrara 

      5 weeks ago from New Hampshire

      Hi Joe,

      Yeah, it sounds like a misfire. I recommend you check all your plugs for cracks in the ceramic insulators, and if you dropped one during installation I highly recommend you pull that plug and check for cracks and also check the electrode gap.

    • eddiecarrara profile imageAUTHOR

      Eddie Carrara 

      5 weeks ago from New Hampshire

      Hi Nurse,

      Does the transmission go into neutral or the engine stops running?

    • eddiecarrara profile imageAUTHOR

      Eddie Carrara 

      5 weeks ago from New Hampshire

      Hi Kim,

      I think the transmission is full. It's most likely slipping because of a different problem? Those codes are generic codes so I have no idea what they are, sorry. I recommend having someone with a good scanner pull the codes, you may just have a problem with a solenoid or valve.

    • profile image

      Kimberly Smith 

      5 weeks ago

      I have an 04 LB7 (Chevy Silverado 2500HD) and tonight on the way home my transmission started slipping so I stopped at the store and put fluid in it and noticed fluid pouring out of the top of the transmission with my programmer throwing codes 0722, 0841 and 0843. Any advice on what I need to do?

    • profile image

      Nurse4155 

      5 weeks ago

      Hi, I have a 05 Acura TL we recently put a transmission in. When you go to drive the car it runs fine once it heats up it stops. What could the cause be to make it do that.

    • profile image

      Joe 

      6 weeks ago

      There are no lights coming on my dash board. As for a misfire, I did change out the plugs at the same time. So I can double check my connections and let you know what I find. The fluid I used was generic since it was to only option I had at the parts store. However it had the same ratings my trans required so I did not think much off it.

      Thank you

    • eddiecarrara profile imageAUTHOR

      Eddie Carrara 

      6 weeks ago from New Hampshire

      Hi David,

      I'm not familiar with the Legend transmission but it sounds like a solenoid is sticking, maybe the 3-4 shift solenoid? Honda usually has the solenoids bolted on externally so they are easy to replace if there is a problem, hopefully, this is your style as well.

    • eddiecarrara profile imageAUTHOR

      Eddie Carrara 

      6 weeks ago from New Hampshire

      Me either Emma, can you explain the problem a little?

    • eddiecarrara profile imageAUTHOR

      Eddie Carrara 

      6 weeks ago from New Hampshire

      Hi Amanda,

      Unfortunately, when cars sit for years the fluids get all gunked up. You could try having a transmission shop flush the fluid and replace the filter, it's a quick inexpensive check.

    • eddiecarrara profile imageAUTHOR

      Eddie Carrara 

      6 weeks ago from New Hampshire

      Hi Allison,

      No leaks but is the fluid level correct and what is the condition? I have seen transmission coolers fail internally and mix the coolant with transmission fluid because the transmission cooler is at the bottom of the radiator. I'm not saying that is your problem but you need to check the fluid level and condition because of these types of problems.

    • eddiecarrara profile imageAUTHOR

      Eddie Carrara 

      6 weeks ago from New Hampshire

      Hi Roman,

      I know this is a silly question but dd you check the fluid level and condition yet? Be sure to follow the owners manual on how to check it, there are several different ways depending on manufacturer.

    • profile image

      Roman 

      7 weeks ago

      Why when put my car in revers .and step on the gas it slam in revers.it dont move normal as when you just buy the car.

    • profile image

      Allison.ridgeway88@gmail.com 

      7 weeks ago

      So i have a 2004 Honda Pilot. Occasionally when i am driving i will push on the gas and the engine will rev but will not accelerate any faster or switch gears. It is an automatic. I can usually take my foot off the gas and push again and it work fine. No leaks

    • profile image

      Amandalee78 

      7 weeks ago

      Hi i have a 95 mustang gt automatic and its been parked for about 5 yrs , tranny was fine when parked. But now when you shift to reverse or drive you actually got to kind of rev it up for a second before it will actually start moving. Ive drove for about 30 mins and it steadily did same thing, every time you let off of gas it does it again. Anything i can do?

    • profile image

      Emma 

      7 weeks ago

      I dont know what my car doing

    • profile image

      David KA8 

      8 weeks ago

      Hello Eddie,

      I drive 92 Honda Legend Coupe 4 spd automatic and its transmission has started to slip just recently. Sometimes, after driving for about a minute, the gears disengage, RPM rise to about 2000 and the only way to make the car move again is to bring it to a halt, select a Parking mode, then D4 and everything returns to normal. It has been happening only when cold, both in D4 and D3 modes. I had the whole transmission rebuilt a year ago (torque converter, internals, vehicle speed sensor have been changed, …); the fluid does not smell bad, nor there are any particles, fluid level is correct as well. There are no warning lights on the dashboard, no flashing lights either when the slipping occurs...

      After a consultation with other owners, we agreed that the culprit might be the mechatronic/hydraulic system (“the brain of the transmission” with all the solenoids, valves, springs...), but none of us were 100% sure :D. And since 2nd gen Legend was not officially sold in my country, the local dealership was not much of a help. Could you please help? Do you (or anybody on this forum) have experience with issue such as this? Thank you for your time :)

    • eddiecarrara profile imageAUTHOR

      Eddie Carrara 

      8 weeks ago from New Hampshire

      Hi Joe,

      Sounds like maybe an engine misfire? Is the check engine light on? Did you use the correct manufacturers fluid in the transmission not generic?

    • eddiecarrara profile imageAUTHOR

      Eddie Carrara 

      8 weeks ago from New Hampshire

      Hi Chris,

      Sounds like you have a pressure issue which could be caused by a lot of issues. If the transmission is still under the rebuild warranty I highly recommend you bring it back. I hope the warranty is 12mo-12k miles

    • profile image

      Joe Cleveland 

      8 weeks ago

      I have a 2016 Chevy trax and I recently changed the fluid in my transmission instead of taking it to a mechanic as reccomended by the manual. There is no dip stick so I just added back the amount of fluid my trans is suppose to hold. Since then I’ve been experiencing symptoms similar to slipping but the rpms do not increase during these times. Instead it is more like a loss of power to the trans and feels like it is trying to grab the gear again. It does this in short bursts repeatedly at hwy speeds and more so when using the Cruze control. Any suggestions will be much approeciated. Thanks you

    • profile image

      Chris maher 

      2 months ago

      Hi i have a 06 maxima se i had my tranny rebuilt and now there is a delay from park yo drive and between 3rd and 4th gear it revs up and knocks into gear what could the problem be even after the whole thiang was rebuilt

    • eddiecarrara profile imageAUTHOR

      Eddie Carrara 

      2 months ago from New Hampshire

      Hey Jackson,

      That's great news, hopefully that's all it was :)

    • eddiecarrara profile imageAUTHOR

      Eddie Carrara 

      2 months ago from New Hampshire

      Hi Anguiano,

      If it's only been a year, you may have a 12-month warranty on the rebuild, or even if you're over the 12 months they may help you out.

    • profile image

      Anguiano214 

      2 months ago

      I have 02 ext. Cab. Truck was driving okay until there was a small delay shifting into 3rd. I try driving it home but didn't make it. Turned off the truck and turned it on and no luck. Walked home and tried pulling it but before pulling I tried turning it on it worked perfectly fine till I got home won't move at all in any gear. I wait again like 5 to 10 mins. Turn it on and bam works and drives for 40 secs to a min. Then it won't move at all in any gear again please help had the transmission worked on about a year ago and don't want to get it rebuilt again

    • profile image

      Jackson 

      2 months ago

      Hi Eddie

      Quick update the garage has told me it was the selector cable or box needed adjustment. Pick the car up today some time so hopefully its all sorted.

      Thanks

    • eddiecarrara profile imageAUTHOR

      Eddie Carrara 

      2 months ago from New Hampshire

      Hi Subba,

      You need to take it to a transmission expert like Aamco. They can test the system and give you a diagnosis.

    • eddiecarrara profile imageAUTHOR

      Eddie Carrara 

      2 months ago from New Hampshire

      Hi Blake,

      Most likely you have a blockage in the main clutch line and the transmission is starving for fluid. This happened to my kids 99 CR-V, I ended up using compressed air lightly in each one of the pressure ports on the transmission and it greatly reduced the problem. I also recommend a fluid change after you do this because you're moving debris inside the transmission. Let me know if you try this, thanks.

    • eddiecarrara profile imageAUTHOR

      Eddie Carrara 

      2 months ago from New Hampshire

      Hi Kristina,

      This is the only way I know to prove your point to the dealer. Drop your car off the night before your appointment. Have someone drive you to the dealership in the morning, test drive the vehicle with either the Service Manager, Shop Foreman, or the Tech so you can point out the problem. I know it's a lot of extra time you probably don't have but it will prove to them your vehicle has a problem they need to fix. Keep me posted on what you decide to do, thanks.

    • profile image

      Blake bailey 

      2 months ago

      I have a 2001 honda civic ex 1.7 sohc vtec and i was driving home last night and the trans dies no slip no low fluid no leak, i pull over let it sit start it up again goes back into gesr for 10 secs then dies again and answers on issue?

    • profile image

      Kristina Stewart 

      2 months ago

      Hi. Just bought used 2017 Chevy Cruze. Dealer never told me engine was replaced at 17,000. Found out after purchase. Now has 50,000 miles. The transmission is slipping in 4th gear (only 4th). Hard shifted a few times but generally revs between the shift. Dealer kept it for 2 weeks & said it never did it for them (of course it didn't!). Now ive had it back and it does it daily. It's only first thing in the morning. Once the car has been moving for a few it seems to not do it. Any advise?

    • profile image

      Subba 

      2 months ago

      I have kia sorento (xm) 2010 model, automatic transmission. We have been trying to fix it for the last one year, but still not successful. The car jerks when shifting gear and directly jumps to gear 1 from 3...missing out gear 2 when decreasing. We have changed almost every part of the vehicle but still same problem.

    • eddiecarrara profile imageAUTHOR

      Eddie Carrara 

      2 months ago from New Hampshire

      Hi Caroline,

      It sounds like your torque converter is sticking but I'm not sure why it could be internal or external. You'll need to have it checked for any codes stored in the computer. Are there any warning lights on?

    • eddiecarrara profile imageAUTHOR

      Eddie Carrara 

      2 months ago from New Hampshire

      Wow Stephanie, you were lucky! Glad you didn't get stranded but the news on the transmission sucks. Let me know if you have any questions about the transmission swap/rebuild.

    • eddiecarrara profile imageAUTHOR

      Eddie Carrara 

      2 months ago from New Hampshire

      Great Jackson,

      Keep me posted on what they find, it will help other readers with similar problems, thanks for the feedback so far, I really appreciate it :)

    • eddiecarrara profile imageAUTHOR

      Eddie Carrara 

      2 months ago from New Hampshire

      Hi Joel,

      It sounds to me more like a sticking valve or solenoid but without a code, it will be hard to diagnose unless you can find an expert transmission tech who knows how to check the pressure while driving. The difficult part about diagnosing this problem is it happens under heavy acceleration, so unless they have a scan tool to monitor the transmission while driving, it will be a tough diagnosis.

    • eddiecarrara profile imageAUTHOR

      Eddie Carrara 

      2 months ago from New Hampshire

      Hi Nikoli,

      Sounds like something is out of adjustment or a valve is sticking in the valve body. You will need to take it to a transmission specialest to have it diagnosed. Keep me posted on what the diagnosis is.

    • eddiecarrara profile imageAUTHOR

      Eddie Carrara 

      2 months ago from New Hampshire

      Hi John,

      Have you checked the fluid level and condition yet?

    • profile image

      John 

      2 months ago

      My 2007 grand prix gxp 5.3 some times slips for a second before engaging when in drive

    • profile image

      Nikoli 

      2 months ago

      07 Silverado 4wd v6 automatic, driving down the road and hear clunk clunk then a loud metal grinding...now if i put it in reverse it instantly starts grinding and will only move in first gear? What is going on here

    • profile image

      Joel 

      2 months ago

      Thx for your expertise Eddie! 2005 BMW 330i - GM 5L40E transmission. Getting a slip or "flair" into 2nd gear, mostly only noticeable under heavy acceleration from stop or very slow speed and gunning it. Seems to get a bit worse when warmed up fully. Also had one instance of hitting accelerator hard to get around an issue on highway, dropped into 2nd to accelerate then wouldn't come out of 2nd for around 30 seconds no matter what I did, then eventually upshifted to 3rd/4th and I was on my way. No codes ever. I performed one fluid change according to BMW specs/directions - have seen no change in behavior. Just over 100K on the car. Valve body? Or truly a gear issue (I hope not - really don't have the money for a whole new transmission!).

      Thx, Joel

    • profile image

      Jackson 

      2 months ago

      Thanks for getting back to me. It only started last week and last couple of days have struggled getting 1st and R. It feels like it goes in gear but just doesnt seem to engage.

      But on the plus side rang the garage and they are going to look into it even though its out warranty.

    • profile image

      Stephanie1290 

      2 months ago

      UPDATE: After 2 weeks of my car driving good (after I changed the trans fluid and filter) It all of a sudden died as I pulled I to the parking lot at work. I thanked my car for not leaving me stranded on the highway, and went into work and had it towed home at the end of my shift. I guess i will look into replacing the Tranmission now.

      Thanks for your advice with my issue.

    • eddiecarrara profile imageAUTHOR

      Eddie Carrara 

      2 months ago from New Hampshire

      Hi Leonard,

      A 2200 rpm stall converter will start to engage at 2200 rpm's. Have you topped off the transmission fluid? Is it completely filled to the full line?

    • eddiecarrara profile imageAUTHOR

      Eddie Carrara 

      2 months ago from New Hampshire

      That's great news Steph, I think we might be on to something here :)

    • eddiecarrara profile imageAUTHOR

      Eddie Carrara 

      2 months ago from New Hampshire

      Hi Tammy,

      I recommend you start with a transmission fluid change with genuine Honda fluid to start, drive it for a few days and see if it's any better.

    • eddiecarrara profile imageAUTHOR

      Eddie Carrara 

      2 months ago from New Hampshire

      Hi Joe,

      Are you sure it's the transmission and not your brakes? How do you know?

    • eddiecarrara profile imageAUTHOR

      Eddie Carrara 

      2 months ago from New Hampshire

      Hi Jackson,

      Did this start happening immediately after the clutch was replaced or did it slowly get worse?

    • eddiecarrara profile imageAUTHOR

      Eddie Carrara 

      2 months ago from New Hampshire

      Hi Diane,

      So you have checked the condition and level and both are ok? When was the last time you had it serviced mileage wise?

    • eddiecarrara profile imageAUTHOR

      Eddie Carrara 

      2 months ago from New Hampshire

      Hi Raymond,

      This type of transmission problem needs to go to the experts for diagnosis so they check the pressures inside the transmission during operation.

    • profile image

      Raymond 

      2 months ago

      Hi eddie,

      I have Hyundai Elantra XE 2.0 Avante.

      Have gear shifting issue, when driving in 50 km/H sometime hear knocking sound and car slowing down without gear shifting up.

      I' ve been send my car for repair, they suggested to change solenoid and transmision heat sensor, after changed this parts, problem remain.

      Then, they suggested to changed valve body assembly and new set of cable joining to gear box.

      Finally, the system error been solved. However they told me after the gear box heated temp increase, they still found this transmision shifting issue.

      Can u advice, cause of this problem..thanks

    • profile image

      Diane 

      2 months ago

      I have an ‘05 Town Car and when I slow down for someone who’s turning ahead of me and then resume driving it hesitates as though it’s in neutral for a few seconds, then it engages and moves on. If I come to a complete stop it doesn’t do this. The transmission fluid is fine.

    • profile image

      Jackson 

      2 months ago

      I have a 2012 mondeo recently had new clutch apporox 6 weeks ago. Now all my front gears R 1 3 and 5 dont feel like they are going in properly 1st is the worst sometimes you need to keep it pushed forward to make sure it is in.

    • profile image

      Joseph Abercrombie 

      2 months ago

      My car has been sitting for about 6 months and my THM350 transmission locked up, how could i get it unstuck?

    • profile image

      Tammy 

      2 months ago

      I have. Honda accord i just bought it hs 244 thousand miles i was having a tune up done butmytransmission is sealed but i noticed that when i put it in drive then put my foot on thegas it hesitates for a second then it goes nd hits the gear and drives fine one mechanic said low fluid the other one said get a new trasmission the fluid was changed about 5 years ago please help me

    • profile image

      Caroline Van Wyke 

      2 months ago

      Hi

      I have a Mercedes ML270 cdi 2003. Auto. Runs beautifully, through the gears smoothly, picks up no problem, and smoothly down again, but, when I come to a junction and I stop in D, the car feels like it wants to take off, and the engine struggles and I have to put it into neutral. Any thoughts? Be grateful for any advice before I go and either spend cash or take it back to the seller.

    • profile image

      Leonard Parten 

      2 months ago

      I put a 2200 stall converter in my 350th transmission now my truck hesitate on take off and the transmission starts to slip in drive when it gets hot can you help me out with this

    • profile image

      Stephanie 

      2 months ago

      Eddie, I took you up on your suggestion and changed my Trans fluid and filter in my 09 Chevy Aveo. Only to find that it appeared dark (no horrible smell). I plan to change it again in a month or so.

      So far no issues with slipping.

    • eddiecarrara profile imageAUTHOR

      Eddie Carrara 

      2 months ago from New Hampshire

      Hi Krystin,

      I don't know what the year make and model is but some transmissions have solenoids that control flow to the reverse gear, it's possible the valve is not working.

    • eddiecarrara profile imageAUTHOR

      Eddie Carrara 

      2 months ago from New Hampshire

      Hi Andy,

      If you have a reputable Transmission shop in your area they can test components and pressure ports to determine the issue. Do you have an Aamco's in your area?

    • profile image

      Andy 

      2 months ago

      I have a 2003 Toyota Tundra 4.7L V8 Auto Trans with 194k on it. About 2 weeks ago I noticed my tranmission would give me a pretty good jolt when driving, only around the 2500 rpm range when i was atrepmting to speed up. I took it to the shop and he said it was skipping a gear. He force shifted it and recommended I get the fluid and filter changed. Got it changed a few days ago and it is still doing it. Any thoughts? Im really dreading the thought of replacing it.

    • profile image

      Krystin Gieske 

      2 months ago

      Reverse was working fine one day then the next it no longer worked. All the other gears work fine and the transmission fluid level is where it should be. I have an automatic transmission any ideas on what could be the cause?

    • eddiecarrara profile imageAUTHOR

      Eddie Carrara 

      3 months ago from New Hampshire

      No Problem Jay,

      The car would move if the front axles were connected and the rear drive shaft was removed, and the rear differential really wouldn't have any effect on shifting. The clutch sounds like the culprit but it's just a guess without inspecting the vehicle myself. Let me know if you have more questions, thanks.

    • profile image

      Jay 

      3 months ago

      Thank you so much for the tip. The first repairman said at first my rear diffrential is broken thats why im having a hard time going in reverse. Then he says my transfer case basically going out because my front axle and rear axle arent connected and thats why i cant move foward or backwards (i cant remember if he said transmiision or clutch slipping) at first the vehicle will start to move a little then all of a sudden itll stop moving but the RPMs is still going. Then my check engine light came on but not until after i was experiencing the slipping...

    • eddiecarrara profile imageAUTHOR

      Eddie Carrara 

      3 months ago from New Hampshire

      Hi Jay,

      No worries about your phone. Something doesn't sound right here. The transfer case is on the transmission and the rear axle is on the rear of the SUV. How is it that both components need to be replaced? I know you don't what to hear this but I recommend you get a second opinion because the components they are referring to are on opposite ends of the vehicle and I can't understand how they are both damaged beyond repair. It may cost you a few bucks to switch garages via tow truck but it may save your thousands in the long run. Keep me posted on what you decide to do, and let me know if you have any other questions, thanks.

    • profile image

      Jay 

      3 months ago

      Sorry my phone again but the repaor man said ot was my transfer case and my rear axle, bc now i cant move it foward or backwards. My question is does tht sound about right tht needs to be replaced and if so is there any other damage tht i should look out for? Thank you for your time

    • profile image

      Jay 

      3 months ago

      Sorry the last one had cut me off. But i hace a 2004 Jeep Liberty 4WD, 6 cylinder. At first i was hearing a whinning noise coming the front of the vehicle. Then i had a hard time reversing feeling i had to use more gas to go backwards. Took to the repair shop they said it was my

    • profile image

      Jay 

      3 months ago

      I have a 2004 Jeep Liberty 4WD, 6 cylinder. At first i was hearing a whinning noise coming from the front of my truck. Then i was having a hard time going in rev

    • eddiecarrara profile imageAUTHOR

      Eddie Carrara 

      3 months ago from New Hampshire

      Hi Mike,

      The transmission is having a hard time going into final gear but I'm not sure why. I have heard of those transmissions needing a software update that may fix the problem but you'll need to call the dealership to check for any recalls.

    • eddiecarrara profile imageAUTHOR

      Eddie Carrara 

      3 months ago from New Hampshire

      Hi Tasha,

      It sounds like maybe the first gear clutch pack is worn and may need repair, that would require a transmission overhaul.

    • eddiecarrara profile imageAUTHOR

      Eddie Carrara 

      3 months ago from New Hampshire

      Hi Ali,

      You may need to have it looked at by a transmission professional, at that age, I'm sure the gaskets and O-rings are getting brittle.

    • profile image

      Ali 

      3 months ago

      Hello

      When I am driving the car Mercedes 190E year 1988 with 5 speeds at any speed( on D only) the slipping occurs for short time and then return. some times I stop and move then ok but the slipping occurs again,

      thanks with regards

    • profile image

      Tasha 

      3 months ago

      I have a 99 acura cl 3.0 and it shifts reall whe. Coming and going into first gear after that its fine

    • profile image

      Mike 

      3 months ago

      Hi Eddie,

      I have a 2010 Suzuki Grand Vitara 5 speed automatic transmission. Sometimes during 4th and 5th gears (55-60 Mph) I will get a lag and it won't shift, then I let off the accelerator and push again and it shifts. It happens only sometimes, but the frequency has been increasing. Fluid is changed (not filter) but no improvements. Any idea if this could be something other than the transmission?

    • eddiecarrara profile imageAUTHOR

      Eddie Carrara 

      3 months ago from New Hampshire

      Hi Steph,

      Make sure the fluid level is at the correct level and is clean. It sounds to me like you have a pressure issue, so if the fluid is dirty (dark) I recommend replacing the transmission filter and fluid first. Be sure to check the owner manual on how to check the transmission fluid level, all cars are different.

    • profile image

      Stephanie1290 

      3 months ago

      Hello Eddie,

      I have a 2009 Aveo and recently have been experiencing issues when I come to a Stop sign or Red light my car seems to go into Neutral (it will not respond to the accelerator and the RPM's will go up). But it isn't in Neutral. I can shift it into Neutral and i feel it go into gear, then shift it back and it will go into Drive with no issues. I am experiencing this when I try to park and put the car in to Reverse also. As the car is backing up on it's own (idling) it will slip in and out of Reverse. No Engine or Transmission light comes on. And the problem is intermitting. We do a lot of the mechanics on our vehicles ourselves, but I don't know where to start. please help...

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