Cleaning Throttle Body
WARNING: This page is about a different car, the 2003 GMC Sonoma, 2003 GMC Jimmy, 2003 Chevrolet S10 Pickup, and 2003 Chevrolet Blazer. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
DO NOT subject a throttle body assembly which contains the following components to an immersion cleaner or a strong solvent: Throttle position sensor, IAC valve and sealed throttle shaft bearings. Cleaners will damage the electric components or sensors. Cleaners will damage some of these components that contain seals or "O" rings. Solvents can wash away or break down the grease used on non-serviceable throttle shaft bearings. Never use a wire brush or scraper to clean the throttle body. A wire brush or sharp tools may damage the throttle body components. DO NOT use a cleaner that contains MEK. This extremely strong solvent may damage components and is not necessary for this type of cleaning.
- Inspect the throttle body bore and the throttle valve plate for deposits. Open the throttle valve in order to inspect all of the surfaces.
- Clean the throttle body bore and the throttle valve plate using a clean shop towel with GM Top Engine Cleaner (P/N 1052626) or equivalent.
- If the deposits are excessive, disassemble the throttle body for cleaning. Remove the Throttle Position (TP) sensor. See THROTTLE POSITION SENSOR under SENSORS & SWITCHES. Remove IAC valve. See IDLE AIR CONTROL VALVE under MOTORS, RELAYS & SOLENOIDS.
- After disassembly, clean the throttle body using a parts cleaning brush. DO NOT immerse the throttle body in any cleaning solvent. To reassemble, reverse disassembly procedure.