Hi,
Did you get to the bottom of this? I have a 2005 Boxter that has a surge between 1400 and 2100rpm in 3rd ,4th and 5th gear under light acceleration. The surge affects the RPM by just 1-200 rpm.
thanks
Adrian
I had surging problems but not as bad as you are mentioning and no cel. I did the following that sorted out the problem.
-cleaned my air filter
-cleaned my intake and throttle body
-cleaned my maf
-reset my e-gas pedal
Not sure which step or, if it was a combo of one or two that sorted out the problem. They are all easy to do and any would recommend doing it to know that you can get to the bottom of your problem by a process of elimination. I know you have mentioned that you have cleaned your maf already.
Surging at idle is often a dirty throttle body; I was plagued by that. Over time the computer would learn and adapt but the surging/hunting idle was still there. After cleaning the TB it was rock steady.
Hybrid Mode
