#127044, "RE: 420a problems" In response to In response to 15 Aug-04-09 08:00 PM by CODE4
The IAC is a stepper motor connected to a pintle that basically controls a vacuum leak. True, it does control warmup and high idle during low speed steering, A/C etc.
The TPS adjusts the 5 volt signal coming from ECU to tell it how far the plate is opened. What are you suggesting happens after 10 minutes (or so) that the TPS kills the idle?