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Re: Large drop in idle rpm when AC is turned on 900 93

posted by  someone claiming to be paul on  Thu Dec 14 13:18 CST 2000 [RELATED]

On your model, idle speed is controlled by the fuel ecu / IACV. There may be a signal to the ECU when the AC is on (check a wiring diagram). If this is the case - check that this circuit is functional. I assume that the IACV operates correctly (it may have been replaced - but is the wiring OK??). Is the TPS signal to the ECU correct (adjustment, and wiring). I would be looking at wiring for dirty connections.

Hope this helps.





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