Quote:
Originally Posted by theoforest
Hello everyone,
before throwing a bunch of money at parts, i figured ill post here if someone had a similar situation or that can help me figure out whats wrong.
So the issue is at low load, the car will jerk, kinda like an hesitation, only happen at low load, (throttle position between 8% and 12%), car pulls super great at wot and moderate throttle.
I tought my issue would be a leaky injecor (wich i had) but after i changed it and coded it, it still happen.
Im mostly stock except catless dp, and external pcv. Running stage2 mhd (with dp fix and without it still jerk, but wiht the fix, afr are stable at idle)
Tested all injector for leak and there are none.
I do have a leaky valve cover gasket wich ive order but unsure how that would affect low load and not high load.
Coil and plug have been changed about a year ago and vanos solenoid are new of a few weeks. I also changed my throttle body a few days ago to eliminate the possibilities of it being bad.
When it happen, LFPF is about 80+ psi and rail pressure between 580 and 750.
Here are the logs
WOT
https://datazap.me/u/th%C3%A9o/wot-m...og=0&data=3-17
Steady speed with CC
https://datazap.me/u/th%C3%A9o/cruze...og=0&data=3-17
I cant find much info online. Apprently was a known issue before mhd release the dp fix, but that doesnt do the trick for me apparently.
Any input would be greatly appreciated, thanks. |
Mine does the same, can’t seem to figure it out either. I had a code pop up for the low pressure fuel pump sensor. that’s going to be my next project and i’ll see if it fixes it. And do you have a cel on?