S15/T15 Sonoma P/U 2WD L4-2.2L VIN 5 Flex Fuel (2001)
Idle Air Control Motor (IAC): Service and Repair
IDLE AIR CONTROL (IAC) VALVE REPLACEMENT
REMOVAL PROCEDURE
1. Remove the IAC valve harness connector.
2. Remove the IAC valve attaching screws (1).
3. Remove the IAC valve (2) from the throttle body.
NOTE: If the IAC valve has 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 the IAC valve in any liquid cleaner or solvent, as damage may result.
4. Remove the IAC valve O-Ring (3).
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Clean IAC valve O-ring sealing surface, pintle valve seat, and air passage.
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The IAC valve may be cleaned, use a shop towel or parts cleaning brush to remove heavy deposits.
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Shiny spots on the pintle or seat are normal, and do not indicate misalignment or a bent pintle shaft.
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If heavy deposits are present, remove throttle body for complete cleaning.
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Inspect IAC valve O-ring for cuts, cracks, or distortion. Replace if damaged.
MEASUREMENT PROCEDURE
This procedure is only for installing a new IAC Valve
IMPORTANT: If installing a new IAC valve, replace the IAC valve with an identical part. The IAC valve pintle shape and diameter are designed for
the specific application.
Measure the distance between tip of IAC valve pintle and mounting flange.
If greater than 28 mm (1.10 in), use finger pressure to slowly retract the pintle. The force required to retract the pintle of a new valve will not cause
