323 L4-1600 1597cc (1986)
PTC Coolant Temperature Switch: Testing and Inspection
Fig. 9 Testing Water Temperature Switch.
1.
Remove the water temperature switch from the intake manifold.
2.
Place the switch in a container of water with a thermometer Fig. 9.
3.
Connect an ohmmeter to the switch.
4.
Heat the water slowly and and confirm that the switch has continuity at 60°C (140°F) and below.
5.
Before installing, apply sealing tape to the threads of the switch.
6.
After installing, check the coolant level and check for leaks.
