Thermal Vacuum Valve: Testing and Inspection

81-82 2.3L California

1. Remove thermo switch.

2. Connect an ohmmeter across switch terminals and place sensor end of switch in a water filled container. Place a thermometer into water and gradually heat water while observing thermometer.

3. Note temperature at which continuity exists between switch terminals. The specified temperature is 122 ±4° F or above. If temperature is not within specifications, replace switch.



79-82 Exc. 81-82 2.3L California

1. Remove thermo valve.

2. Place valve in a water filled container. Place a thermometer into water and gradually heat water while observing thermometer.

3. Apply air pressure to valve. Air should flow indicating that valve is open when water temperature reaches 115°F on 1979-80, 122°F for 1981-82 2.0L engines, and 131°F for 1981-82 2.3L engines.