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Thank you both for the suggestions. I removed and cleaned the idle speed control solenoid and tested the resistance while it was off. The resistance is 11 and therefore within the 10.7 to 12.3 specification. After reinstalling it I tested the car again and found the following symptoms.
== At Cold Start ==
Idle: 1500-1700 (low probably due to accelerated warm up solenoid possibly bad, resistance tested on car at 16 outside of 9.3 to 11.3 spec.)
Oil pressure: on mark immediately below 120
Boost/Vac: 15 vac
After warming to slightly above "C" quick throttle rev to 2k and returns to 800rpm.
== At Warm Start ==
Idle: barely 500 and will quit if no gas given by accelerator
Oil pressure: 60
Boost/Vac: 12 vac
Quick rev to 2k and release causes car to backfire then drop to 100rpm and quit.
I noticed that the fast idle cam may be out of adjustment but would it cause any of the symptoms? Is it possible that any idle settings are out of adjustment given that the dealer may have adjusted them with the original vacuum hoses and some vacuum leak that has now been corrected by the installation of new vacuum hoses?
Thank you for taking time from your busy schedules to help others with your expertise and experience.
- James
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