Wagoneer L6-242 4.0L VIN L FI (1989)
Throttle Body: Service and Repair
Throttle Body Cleaning
1.
Under normal or severe operating conditions, it is possible for the throttle body to build deposits in the air flow area and/or near the Idle Speed
Stepper Motor inlet. These deposits can cause driveability problems that may or may not appear as a fault code in diagnosis.
2.
Visually inspect the throttle body air flow area and if deposits are present refer to Powertrain Management/Fuel Delivery and Air Induction
/Throttle Body/Service and Repair and remove the throttle body. Carefully clean any deposits from the throttle body air flow area, and insure
that the intake manifold is also clean.
NOTE: Do not use harsh abrasives or tank solvent washing to clean the throttle body.
3.
Reinstall the throttle body, refer to ADJUSTMENT PROCEDURES, and perform the necessary adjustments. If the throttle body fails to operate
correctly, no further service is possible and the throttle body must be replaced.
