Did you disconnect the battery? TPS and AIS motor didn't become defective by replacing the compressor so replacing them doesn't make sense. Since the "Check Engine" light comes on intermittently, there's a diagnostic fault code in memory in the engine computer. Read out that code; it will direct you to the circuit or system with the problem.
If the battery was disconnected, you need to relearn minimum throttle. Drive at highway speed, then coast for at least seven seconds without touching the brake or gas pedals. After that, the computer will know when it needs to be in control of idle speed.
Tuesday, June 16th, 2009 AT 3:53 PM