[RESOLVED] Stutter problem around 4-4500k rpm - Page 2

Turbo Talon DL · 06-15-2008, 09:34 PM

I am having the same exact problem today and as soon as it did it yesterday I knew what it was related to. You could have an exhaust leak or something that you missed. I have one but its not throwing off my readings much but since I started having this happen my fuel trim Medium and High went from high 90%s to low 103-105%. My O2s went extra rich too when it studdered.

63tuner · 06-16-2008, 04:21 AM

1) Change/check the MAF sensor
2) Change/check the ECU
3) Change/check the fuel pump and fuel regulator

95eclipseSlow · 06-16-2008, 08:40 AM

I have an external wastegate and Im not using the dump tube. Im not so sure if an exhaust leak would cause this specific problem either, i'll test for leaks both boost and exhaust today and let you know. Its weird because its completely fine until WOT.

Maranello993 · 06-16-2008, 01:49 PM

http://www.dsmtuners.com/forums/prob...00-4000-a.html

People were saying this guy had a boost leak but he just ended up changing the plugs JUST LIKE ME and it fixed the problem. Like I said I had this problem with the same WOT stutter. Don't rule out boost leak but try the simple fix first.

Turbo Talon DL · 06-16-2008, 03:20 PM

Quote:

Originally Posted by Turbo Talon DL

I am having the same exact problem today and as soon as it did it yesterday I knew what it was related to. You could have an exhaust leak or something that you missed. I have one but its not throwing off my readings much but since I started having this happen my fuel trim Medium and High went from high 90%s to low 103-105%. My O2s went extra rich too when it studdered.

Fixed the problem. Just the UICP popped off the TB elbow coupler.