Cutlass Ciera V6-3100 3.1L MFI VIN M (1994)
Idle Speed/Throttle Actuator - Electronic: Service and Repair
Mass Air Flow Sensor
Idle Air Control (IAC) Valve
REMOVAL
1. Idle Air Control (IAC) electrical connector.
2. IAC valve attaching screws.
3. IAC valve assembly.
CAUTION: On IAC valves that have been in service, do NOT push or pull on the IAC valve pintle. The force required to move the pintle may
damage the threads on the worm drive. Also, do NOT soak IAC valve in any liquid cleaner or solvent, as damage may result.
Inspection
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Clean IAC valve O-ring sealing surface, pintle valve seat and air passage.
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Use carburetor cleaner and a parts cleaning brush to remove carbon deposits. Do NOT use a cleaner that contains methyl ethyl ketone, an
extremely strong solvent, and not necessary for this type of deposit.
^
Shiny spots on the pintle or seat are normal, and do not indicate misalignment or a bent pintle shaft.
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If air passage has heavy deposits, remove throttle body for complete cleaning.
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Inspect IAC valve O-ring for cuts, cracks or distortion. Replace if damaged.
NOTE: If installing a new IAC valve, be sure to replace with an identical part. IAC valve pintle shape and diameter are designed for the specific
application.
