4 Runner 2WD V6-180.5 2959cc 3.0L SOHC (3VZ-E) (1992)
Idle Speed Adjusting Screw
3. The engine rpm should drop below normal.
4. If a problem is found replace the Air Valve.
5. Reset idle speed, refer to ADJUSTMENT PROCEDURES.
Warm Test (coolant temperature above 176°F (80°C)):
1. Start the engine.
2. Screw the idle speed adjusting screw all the way in.
Idle Speed Adjusting Screw
3. The engine should stall.
4. If a problem is found replace the Air Valve.
5. Reset idle speed, refer to ADJUSTMENT PROCEDURES.
INSPECTION OF THROTTLE BODY (OFF VEHICLE):
1. Remove Throttle Body from engine. Refer to COMPONENT REPLACEMENT AND REPAIR PROCEDURES for proper procedure.
2. Using a soft brush and carburetor cleaner, clean the cast parts of the Throttle Body.
CAUTION: Do not allow carburetor cleaner to come in contact with the TPS, as damage will result.
3. Using compressed air, clean all passages and openings.
Using Compressed Air To Blow Out All Passages In The Throttle Body
4. Check that there is no clearance between the throttle stop screw and the throttle lever when the throttle valve is fully closed.