RL V6-3474cc 3.5L (1998)
If there is no air flow, replace the idle air control thermal valve and retest.
4. Start the engine. Hold the engine at 3,000 rpm with no load (in Park or neutral) until the radiator fan comes on, then let it idle.
5. 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 engine coolant level and for air in the engine cooling system.
If the cooling system is OK, replace the idle air control thermal valve and recheck.
NOTE: If the cover of idle air control thermal valve was removed, do the PCM reset procedure.
