Car: 1995 Geo Prizm, AT, 1.8 L
Problem: With car in park, car idles at 1900 RPM until it warms up (about 5 minutes) then the idle is approximately 1000 RPM.
I'm lost as I believe the IAC and MAP are working properly and the car is pulling 22 inches of vacuum. If I cover the air bypass to the IAC in the throttle body, the car seems to run fine hot and cold. Any ideas?