Hi all,

Iīm new at this forum - Iīm from germany and use the german 350Z forum - but noone can figure out, how to fix my problem.

6 weeks ago I bought my 2008 350Z with the VQ35HR 313 HP Engine with 18000 miles. (watch profile for exhaust mods.)

Iīve read tons of threadīs about the problem, but I still couldnīt find a solution.
Many VQ35HR-Drivers have the same problem and the internet is full of that problem with the bucking engine when we accelerate at 1500 rpm.

Problem: if engine is cold - no problems -
accelerating at 1500 rpm or less causes no bucking or rpm decrease -

but after few minutes, when the engine is going to get warm, the engine is bucking when I accelerating smoothly after the car slows down at about 1500 rpm
- (it does it in every gear and it must look like, i canīt use the clutch - but foot is miles away from clutch - just accelerating smoothly)

and the rpm falls down while starting after red traffic ligths or in "stop & go traffic"

I tried following things:
24 hour battery disconnect and those 2 relearn procedures http://ww2.justanswer.com/uploads/fi..._consult_2.jpg

but no effect...
Does anyone knows the solution how to fix it? or can push me into the correct thread?

Best regards
Marcus

 

Here we go Marcus: https://my350z.com/forum/maintenance...g-warm-up.html