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07-18-2008, 06:31 PM | #1 |
Scooby Guru
Member#: 135252
Join Date: Dec 2006
Location: Coral Springs, FL
Vehicle:2002 WRX Wagon |
Herky Jerkiness
From 1000-3500 rpms the car is VERY jerky to the point it looks like I can't drive. What could be a possible cause that I can start checking? Fuel filter changed 20k miles ago, plus changed and gapped 15k miles ago, problem started roughly 10k miles ago.
Running XPT Extreme Stg 2 GM BCS map (the one you pay for). Also have a non-firing condition: http://forums.nasioc.com/forums/show....php?t=1559402
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07-18-2008, 06:35 PM | #2 |
Scooby Specialist
Member#: 143522
Join Date: Mar 2007
Chapter/Region:
SWIC
Location: Peoria,Arizona (aka hell)
Vehicle:1987 Brat GL 4 Speed 98 Forester L (RIP) |
I kinda have the same problem sometimes where it feels like the clutch is grabbing and slippin and then grabbing during 1k rpm to about 2.5k rpm.
i think its cuz i have a stock clutch and flywheel and need it replaced....so it could be a clutch slip if you know what it feels like, unless your talking like the engine is the problem and not a transmission feel like i have. |
07-18-2008, 08:29 PM | #3 | |
Scooby Guru
Member#: 135252
Join Date: Dec 2006
Location: Coral Springs, FL
Vehicle:2002 WRX Wagon |
Quote:
It does it really bad in 1st gear, less bad in 2nd gear, and hardly in 3rd gear, but ALWAYS at that RPM. |
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07-18-2008, 08:39 PM | #4 |
Scooby Guru
Member#: 140163
Join Date: Feb 2007
Chapter/Region:
MAIC
Location: 3MI Racing
Vehicle:03 STi hellaflunctional |
it sounds like you might have a pre-turbo intake leak.
have you tried using the maf tool? or logging a/f learning and a/f correction? |
07-18-2008, 08:46 PM | #5 |
Scooby Guru
Member#: 135252
Join Date: Dec 2006
Location: Coral Springs, FL
Vehicle:2002 WRX Wagon |
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