With Manual Transmission
IDLE LEARN PROCEDUREAnytime the PCM or the battery is disconnected or the PCM looses power, the PCM's learned position of the IAC valve pintle is lost. The engine idle is unstable when the IAC pintle position is lost. Perform the following procedure in order to return the IAC valve pintle to the correct position:
1. Turn OFF the ignition.
2. Restore the PCM battery feed.
3. Turn OFF the A/C controls.
4. Set the parking brake and block the drive wheels.
5. Transmission in neutral.
6. Start the engine.
7. Turn ON the A/C controls.
8. Allow the engine to idle for 10 minutes.
9. Turn OFF the A/C controls.
10. Allow the engine to idle for 10 minutes.
11. Turn OFF the engine for 30 seconds.