Celebrity V6-173 2.8L (1989)
Idle Speed/Throttle Actuator - Electronic: Service and Repair
Idle Air Control (IAC) Valve Replacement
Typical Throttle Body Assembly
REMOVAL:
1.
Disconnect the idle air control (IAC) valve electrical connector.
2.
Remove the IAC valve attaching screws.
3.
Remove the IAC valve assembly.
4.
Clean the IAC valve O-ring sealing surface, pintle valve, seat and air passage.
^
Use carburetor cleaner and a parts cleaning brush to remove carbon deposits. DO NOT use a cleaner that contains Methyl Ethyl Ketone. It is
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.
^
If the air passage has heavy deposits, remove the throttle body for complete cleaning.
^
Inspect the 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 specific
application.
INSTALLATION:
1.
If installing a new IAC valve, measure the distance between the tip of the pintle and the mounting flange.
^
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.
2.
Lubricate the IAC valve O-ring with clean engine oil.