It would be helpful to know what step the Automatic Idle Speed motor is asking for, but based on your comment about it working for a month after the throttle body was cleaned, you might look there again.
Loosen the AIS motor bolts, then, while the engine is running, pull it out a little. The two torx bolts holding the AIS motor on can be hard to remove so be sure to use the correct size tool to not round them out. Idle speed should increase quite a bit. If it does not, pull the motor off and check that passage for carbon buildup blocking air flow.
If idle speed does pick up, block the hole with your finger. If idle speed goes back down, the inlet side of the passage is blocked. If idle speed stays high, the entire passage is clear.
If carbon blockage seems likely, use carburetor cleaner and a small brush to clean it out.
Monday, March 15th, 2010 AT 3:38 PM