Fast Idle Valve
NOTE:
The fast idle valve is factory adjusted and should not be disassembled.
- Start the engine.
- Remove the cover of the fast idle valve. See Fig 1 .
- Put your finger on the valve seat area and make sure that there is air flow with the engine coolant temperature below 86°F (30°C) and idling. If there is no air flow, replace the fast idle valve and retest.
- Warm up the engine until the cooling fan comes on.
- Check that the valve is completely closed. If not, air suction can be felt in the valve seat area. If any suction is felt, the valve is leaking. Check for air in, and the level of, the engine coolant. If coolant is okay, replace the fast idle valve and recheck. See Fig 2 .