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Old 08-23-2003, 10:42 PM   #1
Scooby Specialist
Member#: 13760
Join Date: Dec 2001
Chapter/Region: Tri-State
Location: NYC-
1999 Impreza WRX
Rally Blue

Default Hunting for Idle? Flats Spots in Torque Curve?

99 RS

Coming back from the Tri State meet today, I noticed the same old 3500 RPM hesitation... Figured I ll reset the ECU when I get home, and I should be good for a few weeks or so..

Not today. Car would shut off on me (when coming back down from a high RPM, such as at a red light, big flat spots on the torque curve too when driving (Bigger then usual hesitation).

I did the MAF recall two months ago, when I got back to my garage, checked for vac leaks in the intake. I have cold air custom intake BTW (I have a vac gauge installed on the car too, and it has never gone below 20 in over at idle..so its OK)

Idle- goes nuts when radiator fan is on and car is idling!..its OK when fan isnt on (checked volts, no drop in voltage either, I have a volt gauge on the car as well, steady 13-14 volts. Even with AC/lights/Stereo system blasting...no drop in idle or voltage, the car wigs when the radiator fan goes on. Doesnt wig any less or more with all the accessories on,+the radiator fan comes on. It hunts for an idle just the same.

In addtion, Ive done the grounding mod. and I get no CEL?

Any ideas?
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