Cold Fast Idle Too High (MIL Works OK, No DTCs Set)

Cold fast idle too high (MIL works OK, no DTCs set)

Diagnostic Procedure:

1. Do the ECM/PCM idle learn procedure. ECM/PCM Idle Learn Procedure

2. Check the idle speed. Testing and Inspection

3. Do the throttle position learning check. Testing and Inspection

Also check for:

- Intake air leaks