Syclone V6-262 4.3L Turbo (1991)
1. Throttle body.
2. Electrical connector.
3. IAC valve assembly (70) and gasket (71).
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Discard gasket.
Notice: On IAC valves that have been serviced: Do not push or pull on the IAC valve pintle. The force required to move the pintle may damage the
treads on the worn drive.
Also, do not soak IAC valve in any liquid cleaner or solvent, as damage may result.
Cleaning and Inspection
Cleaning and Inspection
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Both original and replacement IAC valves have a special factory-applied thread locking compound applied to the screw threads. If the valve
removed from the throttle is being reinstalled, do not remove the thread locking compound that may be on the threads.
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Clean IAC valve gasket sealing surface, pintle valve seat, and air passage.
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Use carburetor cleaner 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 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 air passage has heavy deposits, remove throttle body for complete cleaning.
Important:
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If installing a new IAC valve, be sure to replace it with an identical part. IAC valve pintle shape and diameter are designed for a specific
application.
Measuring (If Installing a New IAC Valve)
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Distance between tip of IAC valve and pintle mounting surface.
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If greater than 28 mm, use finger pressure to slowly retract the pintle. The force required to retract the pintle of a new valve will not cause
damage to the valve.
Install or Connect
