94 B18b1 idles funny it revs up and down when in park and neutral runs fine in gear. was told its a sensor but car runs perfect when driving. its driving me crazy listening to it idle please help
Give your IACV (Idle Air Control Valve) and FITV (Fast Idle Thermo Valve) a cleaning. You can find detailed instructions on the internet with pictures. One is located on the bottom of the throttle body, the other on the back of the throttle body.
