Temperature Control Lock-Out Valve & Switch Assembly
WARNING: This page is about a different car, the 1994 Lincoln Town Car. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Temperature control lock-out valve and switch assembly may also be referred to as Cold Engine Lock-Out (CELO) switch.
With engine coolant temperature less than 120°F (49°C), remove connector from switch. Connect ohmmeter to switch terminals. Continuity should exist. Run engine until coolant temperature exceeds 120°F (40°C). Continuity should not exist. Replace assembly if continuity is not as specified.