Engine Mechanical problem
1994 Chevy Silverado Four Wheel Drive Automatic
I have a Chevy 1500, 1994 5.7 L The check engine light went on only when it was good and warmed up then idled in park. I ran the code and it was code 35 Idle air control valve. I replaced the valve. Symptom continued. I replaced the harness because the plastic was chipped and I was afraid it was not making a good connection. Still the light goes on. Any other things I should look at? Truck idles really smooth. No problem except the light. Disconnected the battery and cleared the code, it comes back after warmed up then idled for about a minute in park. Tapping the gas pedal the light goes off.