I have a 2003 Acura CL type s, 6 speed. I recently had the injectors rebuilt, EGR valve and manifold cleaned out and a new fuel pump. My problem is, I get random hesitation usually from 1st gear to 2nd. It hesitates then kicks in hard. Also if I park the car then 0-15 minutes later I drive it, it will bog and hesitate then kick in and work fine. If I disconnect the vacuum hose from the FPR it doesn’t hesitate. I had it tested and the pressure is 55psi. What do you think is wrong?
Compare your readings to the specifications for your application. You can find the specs in your repair manual. Also, see how pressure behaves after a couple of minutes of engine running, when the hose is disconnected and after shutting off the engine. Go over the description in the post. Also, check the vacuum hose for damage and a tight connection. Also, this could be a sign of misfires at low speed or a problem in the ignition system.
Updated on January 21, 2020
By Dan Ferrell