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How to Remove, Clean or Bypass the EGR Valve on Trafic, Vivaro & Primastar Vans

Updated on July 22, 2017

Do you want this in your engine?

This article is about EGR (exhaust gas recirculation) valves, their effects on your engine and how to remove and replace them. When I was looking for advice on this, I couldn't find anything specific to my van, which is a Renault Trafic, so I thought I'd write this article.

This is for anyone out there who has a Renault Trafic 1.9dci, Opel / Vauxhall Vivaro 1.9dti, or Nissan Primastar 1.9dci van and wants to know how to locate, clean, replace or bypass the EGR valve.

What is an exhaust gas recirculation valve?

The exhaust gas recirculation valve is attached to the air inlet manifold. Under certain circumstances it opens up to feed exhaust gases into the air intake of the engine.

There are several reasons for this, the first is that it heats the engine up quicker from a cold start, which leads to improved efficiency on short journeys as diesel engines don't run efficiently when cold. The engine also creates less NOx, which is better for the environment.

However exhaust fumes being pumped into the engine means there is less oxygen available, as the fresh air that is sucked in from outside is mixed with exhaust fumes. This leads to sooty carbon build up inside the engine and also has an impact on performance as your engine is using air mixed with exhaust fumes rather than fresh clean air.

A common problem with EGR valves is that they clog up with soot and don't function properly. They are supposed to only be open in certain circumstances and are controlled by the engine management system. If they clog, they can stay open all the time which leads to poor engine performance.

There are several options available to you when it comes to the EGR valve. You can replace the valve with a new one. You can clean your valve with carb cleaner and refit it. Or you can blank or bypass the valve completely. I chose to bypass the valve on my van. This means the van only uses fresh air rather than air mixed with exhaust fumes, which has the benefit of increased performance, better fuel economy and faster turbo spool up. It also means that the engine isn't being clogged up with soot and other crap and I don't mind the engine taking a little longer to warm up on short journeys. As it happens it seems to have made no discernible difference in the time it takes the engine to warm up to operating temperature anyway.

If you have a Renault Trafic, a Vauxhall Vivaro or a Nissan Primastar, then this guide will work as all these vans are essentially the same van with a different badge and all use the same engine. There are several different types of engine available for these vans, this guide covers the 1.9 engine although I will add some pictures of the 2.0 engine later.

To find the EGR valve on the 1.9, first you need to remove the plastic engine cover that rests over the top of the engine (if yours is still attached that is), you then need to look on the top of the engine, to the right of the airfilter box. The valve has a plug going into it, which is the solenoid control wire. To remove the EGR valve, firstly undo the connector, use a screwdriver on the clip to loosen the catch and then slide it off.

Trafic / Vivaro / Primastar 1.9 EGR valve location

How to remove the EGR valve

You then need to undo the three bolts that hold the EGR valve in the manifold. I'd recommend removing the bolt on the right of the airfilter box before you touch the EGR valve. You can then lift the airbox out of the way which will allow you slightly easier access to the EGR valve with your ratchet.

You need a 10mm spanner or socket for both this bolt and the three bolts that hold in the valve. You can undo the top two bolts for the valve with a ratchet with a 10mm socket and an extension bar. I couldn't get access to the bottom bolt like this though and had to use a 10mm spanner as access is just too tight. Once you've got the bolts undone, then half of the EGR valve should easily lift off and out.

Undo these 10mm bolts

Once you've got the first half out, then a screwdriver can be used to gently pry the valve out. It took a couple of light taps with a hammer on mine to get the valve to move, but then it pulled out pretty easily. After it is out, then the first job is to marvel at how much soot and crap there is on there. You can then get your carb cleaner and a rag.

Spray the carb cleaner in the hole where you pulled the valve from and give it a good wipe with the rag. This is a bit awkward so you'll need thin hands. Ideally get your wife or girlfriend to get their dinky hands in there to really reach in and get it clean. If she's away, doesn't fancy getting her hands dirty or you have a fat wife with big hands then you'll need something thin to really get the rag right in there so this is when you need to get in the garage and find a good poking stick to push your rag in there.

After you've scrubbed that out, then give the EGR valve a good spray with carb cleaner. It is amazing how quickly it melts away the soot, but a screwdriver and a rag is still useful to get the caked on bits off.

At this point you can either refit the valve, throw it in the bin if it has shot it or blank it off by putting it back in the hole and turning it 180 degrees. If you do this, then the part at the bottom with the hole, which is the bit that opens and closes to let the exhaust fumes from the exhaust feed at the bottom of the valve into your air intake is now at the top. This means that it won't be able to let any more gases in and out.

If you do this, then you'll need to fit the part that fits into the manifold first, including the gasket, making sure you've turned it 180 degrees when in situ. I pushed it all the way in, then used a hammer to gently tap it round til it was in the right position. Then refit the solenoid part (the part on the right in the picture below) the original way up. All 3 bolts will then fasten back into their original places. This allows you to fit the wire connector and also means that the valve is still connected up the engine management system, which means that the engine still thinks it's working, even though when it opens the valve then no exhaust is allowed through. If you do this, it won't throw an error code.

Turn the EGR this way up on the 1.9 engine to blank it off

The photo below shows what the EGR valve looks like when it has been bolted back into place in the manifold. As you can see the outside part lines up correctly and all 3 bolts go back into their original locations, but the inner section and gasket still seals the EGR valve into the manifold, but the bolt holes no longer line up. The hole at the top is the hole for the bottom bolt, but is now exposed as the inner section has been rotated.

This isn't a problem, the EGR is still airtight and secure. It can take a bit of fiddling to make sure that the inner section is turned at 180 degrees, but you'll get there!

All 3 bolts in place with inner section rotated

After this you're done. If you've turned the valve to blank it off then you should find the van is perkier to drive, with a bit more power and a faster turbo spool up time. Apparently the fuel consumption is improved by around 5% as well. I haven't measured this to confirm it, but any potential increase in mpg is a bonus in my opinion. Plus you know the engine isn't being filled with exhaust fumes, soot and carbon which should lead to longer life and also gives you a nice warm feeling inside.

If you've decided to keep the EGR valve functioning, but have cleaned it all out so it works properly then you can be happy that you're doing your bit for the environment and your engine should now be performing smoothly again.

I have written another guide on how to change the MAF sensor. Once again this applies to Renault Trafic, Opel / Vauxhall Vivaro and Nissan Primastar vans. You'll find a link to it by scrolling down the page.

If you have any questions, or comments, please leave them below. Enjoy your van!

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    • profile image

      Noel 2-5L Dci150 4 months ago

      Hi rain defence , Thanks for all these useful information,

      Can you tell me where to find my egr and how to do this pypass on a 2008 2.5L Renault traffic van?

      I would greatly appreciate

    • profile image

      Simon Stocker 5 months ago

      I have an 03 Renault traffic Deisel have an issue with the coil light coming on intermittently under acceleration it had been suggested that may be egg valve,I have cleaned it out thouroughly but still have the issue anyone have any idease.

    • profile image

      OJW 6 months ago

      Are there any mechanics in the Leicester area willing to blank off this valve on my Vivaro? For payment, of course. Replacement's going to cost £300.

    • profile image

      leonard 7 months ago

      my 2010 vivaro is displaying depress foot brake sign on the dash board and when the van is started and gear is initiated to 1 drive its not moving but is displaying depress foot brake.. therefore I cant move the van. pls need help.....

    • profile image

      Stewart 9 months ago

      Thanks for the article. Very helpful and we'll explained.

    • profile image

      Daz 11 months ago

      Drives like a dream , great advice

    • profile image

      Steve 13 months ago

      Have vivaro van..because of poor acceleration renewed air filter + fuel filter + and new air flow sensor but still same...I cant drive it What i would like to know...the pipe that the air flow is connected to does that fit else where and if it does would that cause problems if it came away from the other end...Please

    • profile image

      shane 13 months ago

      Hi I have a vauxhall movano with the same egr as yours iv decided to blank it of as iv cleaned it and worked great for 200 miles now it's got that flat spot back but iv got a broken bolt on mine will it still work

    • profile image

      Darren 15 months ago

      I have a 2.0L Vivaro. It keeps misfiring in the morning especially and when im high reving in 1st and 2nd gear mostly do you think blocking the egr valve will stop this from happening? Thanks in advance

    • profile image

      John 16 months ago

      Just turned my egr valve as said in your information. Now will not Rev above 2500 revs any ideas

    • profile image

      Mark 16 months ago

      When I start my Renault Trafic it does start but idles for a while and I am unable to rev the engine. After a couple of minutes I am able to rev the engine. Could this be because of the EGR valve? Thanks.

    • profile image

      Martin 16 months ago

      Excellent article, one of the most informative I've seen.

      Anyway I've cleaned out the egr valve with decarb spray and put back on the van the correct way up and now the van is driving like it should. Thanks very much.

    • profile image

      Dan 16 months ago

      Did this and now there's a ticky/tappy noise coming from the engine when driving not sure if it's a coincidence

    • profile image

      Dave Keenan 16 months ago

      Hi, Mate you are a champion, thanks for helping out .regards Dave

    • profile image

      Anthony 16 months ago

      Hey mate, awesome article.. took me 100 hits with the hammer to get both parts out eventually and a few gashes :O rotated the inner part of the egr v and aligned the bottom right hole so was able to use this when putting the outer part back on.. when i started it, it turned over a couple times till it wouldn't anymore.. further attempts were worse until eventually the service light started flashing. Had to reset computer and reinstall in the standard position to get it working again.. also notice my air flow meter hose had blown off during this.. I really want to blank it out for a bit more power.. any idea why mine had this result and what i might try.. Cheers mate

    • profile image

      Despot56 17 months ago

      Great explanation and photos. Made the job easier than I expected.

      All good now, thanks.

    • profile image

      Mike 123 18 months ago

      Did this today and all working well. I would say though that separating the valve was quite tough, however.

      Many thanks agaain

    • profile image

      craig 18 months ago

      my wasnt starting just done it and works fine thanks for the advice..

    • bigstu63 profile image

      bigstu63 18 months ago

      also it starts first time every time raining or not. the maf sensor was changed out because it came up as a fault.

    • bigstu63 profile image

      bigstu63 18 months ago

      morning. have a 03 1.9 vivario

      when it rains the engine will not rev up. cleaned gutters and down pipes as water was getting onto air filter. full of silt. changed maf sensor worked better but now every time it rains it will not rev up. couple hours drying out and its fine again. any ideas?????

    • profile image

      Douglas 20 months ago

      The best article I've read on van maintenance! Clear, easy to understand and great photos. Brilliant..and saved me a few quid as well.

    • profile image

      luis pacheco 21 months ago

      good I'd like to ask a little thing

      I have an Opel vivaro 1.9 dti 2001 and she did not have much strength and has a very strange symptom

      1- when I go to puchar the changes she not pucha right pucha and then stops and puchar back soon puchar this only happens when I walk en 6 change already changed the EGR valve mass air meter and remains the same

      2 can help and am I of Portugal and tou gartar fed up money and tou unhappy with truck

      if you can send an email with what I can do thanking thank tou desperado

      - Email lpdesentupimentos@gmail.com

    • profile image

      Windows87 2 years ago

      Had this fault on my Vivaro 2002 and it was the fuel line letting air in. Did you replace your fuel line John.

    • profile image

      john 2 years ago

      hi had a problem with 1.9 vivaro going into limp mode at 70mph changed egr and maf and boost sensor found out it was a blockage were the boost sensor fits drove about 20 miles evthing ok then I spotted a diesel fuel leak so I also fixed that.now after about ten miles of driving the van starts to become sluggish and slow could this be a prob with airlock in fuel system due to a small hole in fuel line no management lights have come on many thanks john

    • profile image

      mike 2 years ago

      hi,

      is it enough just to unplug the EGR valve?

    • profile image

      Cucikas 2 years ago

      Hi to all. I did have problem whit EGR valve, my van Renault master dci100 2.5l, 2005 year, problems no power up to 2500 rev, I changed EGR valve, still same problem, then I just unplugged cables from EGR valve, simple and it works, I believe no wan say anything about electric fault, this is the 5v power supply from ECU, I attached link from yotube how to test and fix the problem, it is easy, and I hope it helps to most of cases, you can try this be for you go to any garage and start changing any parts. SORRY for my English

      https://www.youtube.com/watch?v=the_kapz-fj4

    • profile image

      Neil sarge 2 years ago

      My van pisses out black smoke on pulling away, and when accelerating pretty much anywhere,flat,downhill,uphill, had the egr valve changed oct 14 but it's since then that I've noticed the smoke issue, had new cat fitted, air,oil and fuel filters done and injector cleaner put thru but nothing as worked yet, still getting black smoke, any ideas?

    • profile image

      jamezy rutland 2 years ago

      followed your procedure on EGR valve on my vivaro & what a difference its made, did the 180 degree bit to blank it off & everything now hunky dory, liked very much the bit about having a fat wife, fortunately I have neither a fat or thin wife thank god so had all the time in the world to do the job properly without any nagging, a great tip & very easy to follow. ps I also broke a lug of the part of the erg valve that fits in the manifold but got it out & you don't use the holes when refitting so no probs there .

    • profile image

      Joe 2 years ago

      I have a 1.9 traffic 05 plate, my van was running fine, no real major issues, no Rev issues, no smoke but it was suggested I try this. I got the first part off, couldn't get it out the manifold, I broke part of the flange when tapping sadly.

      So to prevent any more damage I put back together but now I have no revs past 2k and it's slow getting to that! So I can't drive! I didn't touch the EGR really, what could I have done?

    • profile image

      SheilaM137421 2 years ago

      To buy products that enhance the abilities of your car, visit http://www.navtool.com/#54e9162f600a4

    • profile image

      will 2 years ago

      Thanks for taking the time to make it easier for use all..I removed mine and cleaned it and put it back 180 degrees so the valve was facing the top..It was easy and it's made a difference between 1 and 2000 revs which was terrible before..It drives better round town..Many thanks for people like yourself...

    • profile image

      rusty 2 years ago

      took my egr valve out on my renault 2006 1.9 dci cleaned it and turned it around but it wouldn't rev ???

    • profile image

      its all gravy 2 years ago

      hi great articles.

      I have an 04 vivaro 1.9. its a bit slow to start and seems to misfire until it is warm usually when it gets to about 80 degrees, it then drives normally. its only sluggish when cold. had egr replaced maf sensor cleaned, changed the glow plugs but still the same. no lights illuminated on dash. any help would be great cheers.

    • profile image

      patrick lilley 2 years ago

      is the 2litre erg valve same as 1.9

    • profile image

      pascal 2 years ago

      this worked fine for me it improved power some what but i think i might have other issues such as booster solenoid ect what i wanted to ask is after blanking of valve i have a fault reading p1401 all i wondring is will this effect the turbo or anything else thanks

    • profile image

      darren 2 years ago

      Hello,I just tried to remove the egr valve got it split into two,but couldn't get the inside part out,you said pry the valve out with a screw driver is that trying to get it behind it between the manufold and the valve or pull from the centre?

    • profile image

      Stephen neal 2 years ago

      Renault scenic 2001 dci f9q engine electrical fault/glow plug light .

      Hi i would like to add this i have completely removed the egr out of the housing and I must say it works like a charm using a blanking plate and still using the electrical part of the solenoid with high temp sealent I had a problem with glow plug/electrical fault light coming on now and again when driving up hills or coasting this is what was causing g the problem forget all boost valves glow plug really boost solenoid it's simple I now this is a very common fault with f9q engines .. first have a look at the egr recirculation pipe this is located under the egr housing if it's oily or damp with carbon I put it this is your problem pressure lose from turbo intercooler system I took it to a guy who put it on the computer and I read glow plug circuit and egr flow. First I removed the egr valve from the housing u will need to block the tin pipe I used a half inch 3/4 drive socket use a long threaded bolt through the socket place 2 nuts on each end with washers tighten tight drill through the ends were the nuts are place a split pin so nuts don't fall out and smash the turbo vains up place socket inside the ton pipe I used high temp sealent around the the socket and tin pipe and refit using the clamp clamp the tin pipe against the egr housing and it's completely sealed I no this works I'm running my renault scenic 1.9 dci 2001 f9q engine . You will have full flow from the intercooler to turbo no restrictions my mpg has gone up to 54.4 mpg driving at 60 mph on a 2001 car it's brilliant my turbo went so as i had it all in bits I done this good luck people

    • profile image

      Nick 2 years ago

      Hi Rain Defence. Can I just say never come across such a well explained article in all my time. Thank you very much for your help, learnt a lot! Very genuine man!

    • profile image

      aos26 3 years ago

      Hi I have a 2005 primastar that all of a sudden has lost power.it drives but a lot slower than normal.sometimes the glow plug light comes on and the van goes into limp mode.I took out the egr valve and cleaned the back of it..mine didn't want to come apart from were the bolt holes are and i wasn't sure if it was supposed to until i seen your picture above.ill try that again today..do i just lever it apart?any other ideas would be great..thanks Andrew.

    • profile image

      John 3 years ago

      hi have got a traffic 115 2007, m9r 2.0cc engine. problem is that it stalled the other night but when I went to start it again it just run for about 3 seconds and cut out again it keeps doing this,put it on diagnostic and it came up with a code P2149 with the defo saying fuel injector group" B" supply voltage circuit/open. not sure what this means!! If it needs new injectors or if there is a wiring fault,any suggestions would be much appreciated thanks.

    • profile image

      John 3 years ago

      Hi

      My egr seems to be riveted together (has been replaced in the past) I tried prying it apart but I think they need drilling out.

      Also once the inner part has been rotated 180 does the inner bottom bolt hole line up. I know the out holes Line up but does the inner bottom hole line up.

      Many thanks

    • Rain Defence profile image
      Author

      Rain Defence 3 years ago from UK

      The concept is the same even though the layout is a bit different.

    • profile image

      Barry Needham 3 years ago

      will this work on a Renault 1.5DCi engine looks like the same EGR valve.

    • profile image

      jules mew 3 years ago

      Have done the egr and maf cleaning. I have two fault codes 1826 glow plugs relay and 1804 boost pressure sensor. Where is this sensor please?

      Thanks

    • profile image

      JulVivaro 3 years ago

      Hello,

      Great article! I did what you told and it work perfect. Thank you so much for sharing this!

      Now an other question. Because the EGR is not used now .. the MAF is also not needed anymore. I understand that the MAF can be replaced by a diode on the plug.

      -Does someone know which value the diode need?

      - Which pins do I need to use with this diode?

      I drive: Opel Vivaro 1.9DTI, 2005

      Thank you much!

      Kind regards,

      Jul

    • profile image

      Jul 3 years ago

      Hello everyone,

      I was happy to found this article. I did exactly what you told here and it work perfect! Thank you very much for your information.

      But now I would like to replace the MAF by a diode. Do you (or other members) know the value of this diode and how to connect (which connection numbers of the plug)?

      Thank you much!

      Kind regards,

      Jul

      Opel Vivaro 1.9DTI 2005

    • Rain Defence profile image
      Author

      Rain Defence 3 years ago from UK

      I have exactly the same problem on mine! If you find the solution let me know!

    • profile image

      Steve K 3 years ago

      Thanks for a great article and your advices Rain Defence.

      I will follow it up.

      Now off topic.

      I have problems with my windshield wiper motor.

      It will not stop at correct place. Its stops randomly on the

      windshield. I have change the motor but the results are the same.

      Any ideas wat to do now?

      Vauxhall Vivaro 2001 101 hp.

    • profile image

      bobo 3 years ago

      Egr valve helps the engine. Removing it fuel consumption grows by 5%, engine suffers as it must absorb shocks from turbo, also clutch-transmission gets affected by that new behavior of the engine, engine becomes noisier, life span of the engine is affected (shortened) as the combustion inside cylinder raises above 2.500 Celsius. Without egr the car gets smookie

    • Rain Defence profile image
      Author

      Rain Defence 3 years ago from UK

      Thanks for your comment, best of luck with it.

    • profile image

      kroutneul 3 years ago

      very interesting article and comments i will try rotating mine at weekend many thanks

    • profile image

      dave 3 years ago

      Hi great erg article I have a 07 vivaro done 90.000 miles

      loads of white smoke from cold start doesent seem to be using water could this be a symtom off dicky egr rgds dave..

    • profile image

      Robin 3 years ago

      Hi I have a vivaro 07 m9r 2 lt diesel

      My engine light came on and I had it checked on the plug in fault finder,it came up with code for glow plugs,at the expense I had 4 new ones put in,all 4 removed ones were burnt out,

      After putting new ones in and trying to eliminate the dash light it stayed on

      Engine still runs fine but light on

      What causes the plugs to burn out

      Should I look at anything specific

      I've unplugged the new ones in case the new does the same as the light was still on so new plugs didn't seem to rectify problem

      I'm now lost ,any help with thanks

    • Rain Defence profile image
      Author

      Rain Defence 3 years ago from UK

      It will be online with air inlet, so track through from the air box and you'll find it.

    • profile image

      Ian 3 years ago

      Hi there

      Been having probs for a while now(03 vivario) first was diesel leak then clutch went and at same time a whistling sound started which at first I thought was clutch related but was the same after new one was fitted. Have cleaned out egr b4 when van was smokey and it worked a treat . But now have the orange light on and fault saying turbo pres sensor fault and the van has no go in her at all till 2300rpm.

      When I disconnected maf sensor it runs like a train but if i let it idle for 3 seconds then it drops into limp mode and is un drivable till I restart engine get revs up and Im off.

      So took it to Diesel specialist to get leak sorted (leaking from pump) and they have tried new maf / tps but still comes up with fault???..... they are saying that whistle sound is more than likely the turbo and so it looks like im heading down that route....so looking at a £1000+ bill !!!!!!! Does this sound plausible.........

      Thx Ian

    • profile image

      rich9001 3 years ago

      Hi I copied ur process of doing checking the egr valve but my engine is different. Its a 2009 1.9dci sl27. The air box is on the top so removed it to hopefully find the egr behind in the same place as described but it isn't there any ideas where to find it and any ideas how to get to it. I was hoping to find it as the engine is very flat especially when it has warmed up. It struggles to rev above 3000rpm and feels like I'm driving with the hand break on if you know what I mean. The van has only done 34000 so not a lot at all. I have cleaned the maf sensor. Any ideas would be greatly accepted.

    • profile image

      jamie 3 years ago

      Hi, if i don't have black smoke but have both the cutting out and loss of power now every 1/4 mile could it still be EGR or MAF? or something else. both engine management light and coil light come on and has been checked by both garage when lights were on (showing as air mass) no difference when fitted and breakdown but shows no faults. sorry have a nissan primaster 1.9

    • profile image

      vanup 3 years ago

      Great post and very informative... changed/cleaned a lot of EGR valves, but can't find mine on a renault trafic 08 plate?. Is it cylindrical like the pics. Cheers

    • profile image

      Stuart Wheeler 3 years ago

      Hi there mate just wondered whether you could help me out. I have a Vauxhall vivaro 1.9dti and over xmas just gone had a few problems.. basically it was running terribly and eventually died and would not start. went from garage to garage by tow and eventually had new MAF fitted and injector wire and worked again lovely. Following this (2 days later) the cam belt and water pump went, had this work done but then realised the van began to drive sluggish dropping into limp mode and coil light would come on and also the speedo would stop working.. this would happen for a while then here and there it would kick back in to full power and light would go out and speedo would start working again. Ive had it on the machine and only came out with 'ho2s heater circuit high'. It does it all the time now! I don't know a lot about vans and am a self employed roofer.. I have spent £700 on this van in the last few months and just wondered whether you could put me in the right direction so I could get parts and get sorted instead of having a mechanic charge me a bomb for no info as they seem to be doing! Cheers mate. Stu.

    • profile image

      acedit 3 years ago

      Hi, I have what I think may be a related issue however I don't know. I have had issues with my primastar cutting out just after starting. my mechanic messed about with it and "repaired it" by changing the fuel lines or something. was fine for 2-3 weeks but its started again. anyway, in your second pic (where you locate the EGR) just under the arrow is a fitting on a hose with 4 wires attached. Mine has 2 cut and taped over, it looks like yours has one cut too. What is this part and why would some one think its okay to cut and tape the wires? and is this part of my problem?

      Thanks for reading this and your article seems very informative even if I don't have a clue what it means!

      Cheers.

    • Rain Defence profile image
      Author

      Rain Defence 3 years ago from UK

      It will just pull apart if you try a bit harder! Try a flat head screwdriver.

    • profile image

      jim 3 years ago

      Hi..ive tried to split the valve in two but have realised that where the bolts are its all sealed do u have any other suggestions please apart from this problem your information has been very useful thank you kind regards

    • profile image

      steve 3 years ago

      Regarding Gareth post I have changed glow boost solenoid it still the same look under the egr housing yes the recirculation pipe o-ring is leaking you will have to remove the inlet manifold to access this once removed pressure wash the manifold housing clean fit new o-ring also you can disconnect the egr lead this will not fire up the light but this does not fix the problem .

      Hope this helps

    • profile image

      Aaron 3 years ago

      Hi wonder if you can help me.ihave 1.9 renault traffic it's sluggish from 2000 revs to 3000 revs .i have cleaned the egr valve .but I have black smoke when revving and driving .its ok when aim at steady speed but as soon as I put my foot down it puffs out black smoke and smells.if aim parked up and rev van it leaves lots of black soot on floor many thanks aaron

    • profile image

      Gareth 3 years ago

      Regarding post from stephen Neal...,I have the f9Q dci engine in my 2002 scenic,exactly the same problem as stephens car,I have removed my egr valve,split it and refitted upsidedown with no difficulty,still have the glow plug light coming on and power loss when engine is under load,when this happens I have to take my foot off the accelerator,the glow plug light goes off and the turbo spools up again and the car is back to normal....till the light comes on again !,just can't quite understand stephens fix...was it a perished o ring on the steel recirculation pipe the fault or something else ?I have thought of bypassing the boost solanoid valve by joining the two rubber pipes together,has anyone else tried this with success ?help appreciated !

    • Rain Defence profile image
      Author

      Rain Defence 3 years ago from UK

      Is it inline with the air inlet?

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      Darren 3 years ago

      Could somebody please help me. I'm trying to change the EGR valve on my 09 plate traffic, it doesn't look like the pics on here so want to make sure I'm not pulling of anything I don't need to .... Please help!

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      Rob 3 years ago

      Firstly thanks for the initial post regarding the EGR, very handy with pictures. I've had very similar problems to previous posters and thought I'd share just in-case its of any help. Every time I went over 2000 revs, it would light up with the glowplug light and go to limp mode. I tried changing the MAF, cleaning the EGR, changed the boost solenoid, but still no joy. Had two separate mechanics look at it one even admitted he was defeated as he was reading out from his diagnostic equipment and it was all correct but yet failing each time. So I decided to take a look myself, I removed the air filter box, the MAF, then the intercooler hose, the small tubes too and from the turbo wastegate, the solenoid, on all the items I removed, I made sure everything was clean and the hoses had no restrictions. I made sure that the vacuum pump port was clean ( I knew the pump was ok as I still had my brakes) then on the nipple on the back of the housing that holds the EGR valve, I poked a 3mm drill bit as that was clogged, that was my problem! I made sure the wastegate was ok by connecting a tube and sucking on it, it should more with out too much effort. Then connected everything back up using cable ties on all hose connections to ensure no leakage. I still have a little bit of lag lower end (MAF sensor on order) but no more limp mode, all solved by removing a tiny bit of gunk on the vacuum tube.

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      Steve neal 3 years ago

      Hi I've changed boost solenoid also map sensor still the same as for the steel pipe it has a oring that seals it , it can't come lose as it is held in via manifold it isn't bolted to the manifold, so manifold strip down will be required and new O ring fitted this will fix this pressure lose thanks for posting the first message good luck people....

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      Rain Defence 3 years ago from UK

      Well I think you need to get the pipe attached securely as it sounds like it has come a bit loose somewhere.

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      Rain Defence 3 years ago from UK

      Too hard to say by just reading but at least you can rule those two things out if you do them.

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      Stephen neal 3 years ago

      Hi great info

      this might be a very useful information on Renault 1.9 dci F9Q engine fitted to a lot of cars throughout the range I have had a problem with my scenic electrical fault /glow plug light coming on now and again even when cruising at 30/40/50/60 any speed really if I hit a bit of a hill slight incline the glow plug fault light would come on by taking my foot of the accelerator the light would go out so by following your great advise by blanking off the egr valve semi fixed this but didn't cure it I have finally found the fault. at first I changed the glow plug relay then glow plugs, then boost solenoid and map sensor still the same

      This is what's causing this very common fault ignore all solenoids valves etc...

      Under the egr housing there is a steel recirculation pipe to send gass back through the engine for re-burning on mine it was covered in oil/carbon even by turning the egr around it doesn't stop all gass entering the pipe so this was causing pressure lose a o-ring that has perished the intercooler system has not enough pressure. the map sensor and boost solenoid sending mixed messages to the ecu this firing up the fault light so check all pipes around the egr housing the small black pipes the inter cooler pipes this is so common on the F9Q Engine so I'm hoping this will get posted so many people can get round this very common fault.

      Good luck people....

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      Flyboy 3 years ago

      There are no leaks of fuel but I can see air in the pipe!!

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      Rain Defence 3 years ago from UK

      Are you sure the fuel pipes aren't leaking somewhere? Sounds like you've got air getting in somewhere.

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      Flyboy121 3 years ago

      Hi my vivaro 2005 needs me to prime the hand pump every 4 to 5 hours to get it started?

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      Rain Defence 3 years ago from UK

      Thanks for your contribution, my next van will be a newer one so I'll take a few pics to update the hub when I get it.

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      TC 3 years ago

      Just cleaned EGR on Traffic 07...pretty easy job..valve etc is at the front of the engine and nothing like earlier models. Look on ebay under EGR. The valve is not the cylindrical one that can be turned through 180 degrees but the larger type. Hope this avoids confusion with earlier posts and the suggestion that covers need to be taken off...THEY DON'T.

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      Richie 3 years ago

      hi i've got a 57 2.5 auto traffic which goes into limp mode with the glow plug light showing as soon as the slightest bit of strain is put on the engine. The fault re sets itself every time the engine is turns off and re started. if i drive it like an old lady being super gentle on tbe accelerator then the lights and limp mode stays off but the second i squeeze the accelerator just a little too much we get the orange lights back and limp mode. I have done quite a bit of motorway driving lately and while just leaving it in limp mode and on about 4 occasions while in limp mode the engine has cut out completely with a bunch of extra red lights coming on. on each occasion i have coasted to a stop, turned off ignition then restarted which has straight away cleared all faults and away we go again. ive taken this to the dealer and they have said its a leaking fuel rail and will be £1000 to repair but i really don't want this to be the start of an expensive trial and error game at my expense, i haven't done the EGR mod or checked the MAF sensor yet which do sound promising and i will do but does this fault sound like something that would be cured by both of these being done or could it possibly be something else like a leak in the fuel rail?? Great info on here btw its so hard to find genuine practical knowledge on these issues,

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      Baza 3 years ago

      Hi I did this on my vivaro 53 plate 1.9dti was running fine before just turned egr 180 degrees an went to start was hard to start an now won't rev above 2000 any ideas?

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      Rain Defence 3 years ago from UK

      I will do when I get time. Am planning a few more how to articles soon as soon as it gets a bit warmer!

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      Shorty 3 years ago

      Great guides both have been very useful and easy to follow. Are you still intending to do an article on the boost sensor ?

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      Rain Defence 3 years ago from UK

      Thanks a lot. Always nice to hear that someone has found it useful.

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      Phil 3 years ago

      Thank you very much for this really helpful guide.

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      Rain Defence 3 years ago from UK

      Glad it helped you. Mot man won't have inspected the air filter for the mot, the bolts probably just worked loose themselves.

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      Rain Defence 3 years ago from UK

      Check out my other article on how to clean/change maf and give that a go.

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      TIGERMUSTAFA 3 years ago

      Hi

      I have a nissan interstar 2006 dci MWB, i bought it back in 2009 from an auction it drove fine first than went in limp mode wont rev above 2000rpm

      eventually if you let it runnig not driving it will be ok any rev it will make it but than when you come to a hill even if you're in the right gear engine management light will come on with flashing stop light and will cut out it used to start again but it just got heavier and heavier and now wont start at all only with easy start.

      I regularly get it serviced and do take care of the van.

      took it to so many mechanics but they all talking about different things

      which makes me think they will just try this and that and it will end up costing me £££££

      so far from you guys i have cleaned the egr (not blanked it)

      changed the crankshaft sensor from renault original part

      changed fuel filter and checked for any leakage (there was a tiny leak on fuel filter housing played with it little bit van was ok for two weeks start every time but still in limp mode for a while than drives ok..

      I AM ABOUT TO LOSE IT

      PLEASE HELP ME WITH YOUR ADVICE ANY ONE WITH A SIMILAR PROBLEM THAT HAVE SOLVED IT.

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      Andy parting ton 3 years ago

      Thanks just cleaned the egr and maf and all seems ok after collecting it from its mot and it mysteriously starting to have no power , also tightened the screws on the air filter had he left them loose on purpose??!!

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      Rain Defence 3 years ago from UK

      If he's said he'll have a look but it won't be cheap, my best advice is find a new mechanic. He doesn't even know what it is yet, how can he say it won't be cheap?!

      I'd be checking the idle control valve in your shoes. Good luck and let me know what exactly was wrong after you've got it sorted.

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      mikey 3 years ago

      hi my vivaro 02 is cutting out when I get to lights & junctions but then it wont do it for few days its really puzzleing me, ive took it to a garage today hes told hell have a look but it wont be cheap so im just asking for advice of what it could be so I can relay this information to him so he doesn't rip me off just before xmas please advize

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      Interlineal P.E.Ruser_ P.robable E.rror. 3 years ago

      I've been thinking along the same lines as Steve Neal about removing the EGR valve altogether and sealing-off the exhaust opening within the housing itself, as the stupid EGR valve must be restricting the fresh airflow quite a bit, which will hamper the turbo trying to spool-up. I don't live in a cold climate here in OZ so I don't really need the EGR's assistance, and I certainly don't need to be squirting any percentage of dirty exhaust gas back through the engine on my 2005 1.9 LWB Traffic.

      I pulled my turbo boost solenoid apart and found that it's another stupid device, in that it doesn't actually entirely seal-off one pipe from the other, even when brand new, because where the stainless steel disc sits there are several cutouts underneath it that prevent it from ever performing a complete seal, so I removed it altogether and just joined the two rubber pipes together with a short [1 inch=25mm] piece of black garden trickle irrigation pipe[zero co$t].

      On another note, the fine-wire mesh in the MAF sensor must also be restricting airflow far more so than the EGR valve does. I squirted half of a very large can of contact spray inside my MAF sensor and apart from hitting the sensor wires with the spray, I gave the fine wire mesh a darned good spray too, so as to help increase airflow through it. It woud've been cheaper to apply just methylated spirits with a small paintbrush on the mesh per se, but we live and l*earn*! I put it back together and although there was a slight improvement with the MAF sensor connected electrically, it still wouldn't rev up properly under load same as before, so I disconnected the MAF sensor's electrical connection altogether, and boy!, does the turbo spool-up now, same as it always had before when disconnected, but slightly better now. I may buy a new NAFF..err..MAF sensor and fit it for two reasons. 1. To see if it does improve things. 2. And this is probably more important. I particularly want to pull the old MAF sensor apart and have a look at its electronics, particularly to see if the fine wire mesh is connected electronically to the sensor wires. I strongly suspect that it is, but if it isn't connected then I'll remove it[the mesh, and the sensor wires] altogether and put it back on to see if the increased airflow allows the turbo to churn out some much-needed extra grunt at lower revs. This is always where my Traffic needs the extra grunt[at low revs] because once the turbo's spooled-up, it'll always pull like a train.

      If there's a decided improvement with a new MAF sensor[I'll be over the moon somewhere if you're looking for me] I'm still hoping to see if I can repair the old MAF sensor with some el cheapo electronic components. I suspect that the new MAF sensor is going to cost an arm and a leg, just like the $90.00 the mongrels charged me for a new reversing light switch plus whatever it wa$ to fit the bally thing.

      Let's hope I'm able to iron out a few gremlin$ to get these engines performing as they should be! 1.9 Trafics forever Down Under! ;^)

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      Graham Stacey 3 years ago

      I have an 07 vivaro that starts well but after heavy rain it will start ok but then misfires with clouds of white smoke from the exhaust. Once warmed up its ok again.... have cleaned the egr... the maf has been replaced.... any ideas please....

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      jason c 3 years ago

      i have 2003 vivaro 1.9 dti i have turned the egr round 180 degree but it will not run properly and keeps blowing lots of white smoke out of the exhaust what am i not doing right

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      Stephen J Bennett 3 years ago from Norwich

      Thank you for your reply

      The car lasted 4 days but cut out again yesterday aghhh

      And I did notice that the pump was making a buzzing noise ?? Should it ??

      Can you take out and clean the pressure regulator. If not I can get a salvage pump for about £50, are they difficult to change ? I will still change intercooler now if got one ? The one that's on is damaged.

      Again thanks for your help.

    • Rain Defence profile image
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      Rain Defence 3 years ago from UK

      Thanks for your comment, glad you found it useful!

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      Rain Defence 3 years ago from UK

      You checked or cleaned the maf? If not, do so.

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      Rain Defence 3 years ago from UK

      I can't say for certain but I'd be looking at the fuel pump. Have you checked that is ok and on the way out? Get a branch ready just in case.

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      Stephen J Bennett 3 years ago from Norwich

      Hi

      Great thread,very helpful.

      I have a Lag 2003 1.9dci hatch 120bhp

      Problem,intermittent non start,and cut out when driving ?

      Turns over but not fires up first time but does eventually

      And sometimes just cuts out driving if no fuel.

      Also turbo takes about 5/6 miles to kick in.

      Done all the checks on fuel line aok.

      Elecks aok, sensors OK,egr OK,filters OK,

      Still intermittent non start, about twice a week ?

      I'm starting to look at poss intercooler problem, would this cause my symptoms ?? I did try it with inlet hose to intercooler off and the turbo kicked in instantly. ????

      My thoughts are no air flow through cooler causing fuel pressure problems. Any advise would be fantastic or should I thrash it with a branch lol thanks

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      Maz7686 3 years ago

      Hi

      I have a 2004 1.9 cdti I have rotated the valve nice and easy thanks but when I am braking for a junction for example the revs still drop to nothing and the van shudders but does not cut out the when you release the foot brake the revs return to normal tick over.

      Help please. Maz

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      Many Thanks 3 years ago

      My neglected 03 Vivaro (purchased secondhand 2 months ago ) was cutting out with lots of lights illuminated (lots of issues) and black smoked a lot, I rotated the EGR valve 180 as described above and cleaned the MAF, it has certainly helped it! It's stopped smoking and flies along now! but still have lots of other electrical issues which i am working through, Many thanks for a brilliant post and keep it up, Cheers!

    • Stephen Laguna profile image

      Stephen J Bennett 3 years ago from Norwich

      Hi, great thread, very helpful.

      I have a lag 1.9dci 2003 expression hatch.

      Problems, intermittent not starting, and cutting out ?.

      Have check fuel related areas, all aok.

      No ECU lights, eleck aok.

      So started to look at poss pressure probs. ?

      So far I have.

      1/ Fit new air and fuel filter

      2/ Fit new map sensor

      3/ Fit new tdc sensor

      4/ Strip clean egr and fuel filter unit +bleed

      As of last week aok but still not sure its fixed, time will tell.

      I did notice that it takes about 5 miles before the turbo started kicking in ?. I tried taking the inlet of the intercooler, and it reved upstraight away with turbo . ??do you think my intercooler is caput. ? And can these be washed out. ? I have not yet tried your egr blank mod. Any thoughts. ? Cheers fella.