Throttle Body: Service and Repair

1. Under normal or severe operating conditions, it is possible for the throttle body to build deposits in the air flow area near the PCV inlet, and/or near the throttle blades. 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 check for deposits.
3. Carefully clean any deposits from the throttle body air flow area, and the back-side of the throttle plates. While the throttle body is off of the vehicle, check that the intake manifold is clean.
NOTE: Do not use harsh abrasives or tank solvent washing to clean the throttle body.
4. Reinstall the throttle body.
5. Perform the throttle body minimum air flow check. If the engine rpm is not within specifications replace the throttle body.