Summit Wagon FWD L4-1795cc 1.8L SOHC (1994)
Throttle Body: Service and Repair
Throttle Body Service
Throttle Body, Bypass Port Inlet
THROTTLE BODY (THROTTLE VALVE AREA) INSPECTION
Disconnect the air intake hose from the throttle body and check the throttle valve surface for carbon deposits by rotating the valve.
THROTTLE BODY (THROTTLE VALVE AREA) CLEANING
1. Run the engine until warm.
2. Remove the air intake hose from the throttle body.
3. Spray cleaning solvent into the valve through the throttle body intake port and leave it for about 5 minutes.
4. Start the engine, race it several times and let it idle for about 1 minute.
NOTE: If the idle speed becomes unstable (or if the engine stalls), slightly open the throttle valve to keep the engine running.
5. Repeat steps 3 and 4 until the throttle valve surface is free of carbon deposits.
6. Attach the air intake hose.
7. Disconnect the negative battery terminal for more than 10 seconds and connect it (to clear any codes that are set).
8. Adjust the idle speed control and throttle position sensor. Refer to Adjustments.
