|
After the engine is at operating temperature, is there any change in idle if you pull the connector off of the Idle Control Valve?
I found my idle problem by ohming out the wires from the CIS Control Unit to the various components. My idle control valve was doing nothing after the engine started. It only operated for 10 seconds when the ignition was turn on.
It turned out that I had inadvertently reversed the airflow sensor connector with the throttle switch connector when I replaced the head gasket. The connectors are identical and next to each other. After correcting the problem the cold start/warm-up idle is perfect.
I hope you can find the correct schematic for your model so you can verify each wire.
Have you seen this schematic.
__________________
1993 190E 2.3
2001 SLK230
1971 LS5 (454) Corvette Convertible
|