Quote:
Originally Posted by Skyline
Since you're getting a code from the differential pressure sensor, have you tried replacing that? It's in a bitch of a spot to get to mounted to the rear of the manifold, but it's a hell of a lot cheaper than a DME at around $85.
Also, if it is working properly, and giving such a code, have you confirmed that everything is properly sealed up? No air/ vacuum leaks? You might want to plug the throttle body and smoke test using a fitting to put smoke into the oil filler cap. Unmetered air can cause all sorts of drivability issues. BTW Blue Point (sold by Snap-on) sells a stretchy blue rubber universal oil cap with a fitting to attach a smoke machine in the center of the cap that does work with our cars.
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Changed the differential pressure sensor, i haven't checked for codes yet but the car is behaving the same with the bucking and hesitation but limp mode is getting activated much more frequently. I also noticed the car was needing much more frequent refills, calculated it and on average it's getting 8.2mpg, on a good day 9mpg, this is normal driving with a few pushes here and there. The Catalytic Converter conversion bank 2 error came up last time randomly, might it be an oxygen sensor that is bad, but not bad enough for it to throw a code?