try this:

Procedure 1 Throttle/Idle Learn
The Idle Learn Procedure listed below must be performed whenever the following occurs:


•••••
1.2.3.4.5.6.7.8.
9.10.
11.

The throttle body assembly is replaced
The throttle body is cleaned
The engine control module (ECM) is replaced
The idle air control valve (IAC) is replaced
Power disconnection (battery cable, ECM fuse, etc.) (Delphi ECM only)
Turn the ignition ON.
Turn the ignition OFF for 15 seconds.
Turn the ignition ON for 5 seconds.
Turn the ignition OFF for 15 seconds.
Start the engine in park/neutral.
Allow the engine to run until the engine coolant temperature is greater than 85°C (185°F).Turn the A/C ON for 10 seconds, if equipped.
If the vehicle is equipped with an automatic transaxle, apply the parking brake. Whilepressing the brake pedal, place the transaxle in drive (D) for 10 seconds.
Turn the A/C OFF for 10 seconds, if equipped.
If the vehicle is equipped with an automatic transaxle, while pressing the brake pedal,place the transaxle in park/neutral.
Turn the ignition OFF. The idle learn procedure is complete.