Temperature Sensor Valve
NOTE:
Engine must be cold before performing this test. Check hoses, air control diaphragm and valve first.
- Start engine, allow to idle and use mirror to observe position of air control valve. Valve should be open (hot air inlet uncovered, fresh air inlet blocked).
- Continue to observe valve as engine warms up. Air control valve should gradually move to the closed position (hot air inlet blocked).
- If valve does not respond as specified, replace temperature sensor valve assembly.