Originally Posted by
Dr. Unk
This maybe a dumb question but how do I go about resetting the ECU.... I dont thing that could create such a high idle but im not sure. The throttle body cable when the car is off allows the throttle body plate to close completely.... could it be different when the motor is running? Finally im sure its not real safe to allow the car to hold rpms at 5.5k rpms while I check this stuff.. so what do I do there?
thanks
Unplug the ECU and wait for a while, or unplug the ECU fuse and press the brake pedal (the brake light will drain power from the memory backup in the ECU).
Any way you slice it, you have to have airflow to idle at 5500 RPM. Engines don't operate without air. So either you have a leak somewhere past the throttle body, the throttle body isn't closing all the way, or you have a beast of an IACV and it's staying open all the time.
And no, the throttle plate angle won't change with the engine running, unless you have a drive by wire throttle (which you don't). Unplug the IACV and see if anything changes.
How are you checking that you have no vacuum leaks, and how did you delete the FITV?