Hey BobbyC,
hmm, I've had similar problems on my '89 740-
did you check the OBD? check the readings, and it will tell you which component is not functioning correctly.
If the oxygen sensor is not working correctly, (with the very hot air in AZ. it may affect the sensor) and that could affect the IAC and the AMM.
If the IAC has been cleaned and replaced and the oxygen sensor has no readings, it could be an air leak. Take a look at the FAQS on ways to check for air leaks.
That''s about all I can suggest- good luck and let us know how the issue was resolved.
Volvosenior.
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89-740 GLE;91-940 Sedan ;98-V90 Wagon ___ all running well
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