Engine Idle

Sent you a PM...

But, it should be somewhere in the range of 650-RPM to 850-RPM at idle (give or take a little for Tach accuracy). It will drop to the lower range when in Drive. If you are seeing RPM's that are too low or too high, could be the IAC (Idle Air Control) module or maybe the TPS (Throttle Position Sensor). Or, it could be that the Tach isn't accurate if the car is running OK....
 
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