Temperature Control Lock-Out Valve & Switch Assembly
WARNING: This page is about a different car, the 1994 Lincoln Mark VIII. However, it is still accessible from the selected car via links, so may be relevant.
This switch prevents blower operation when engine coolant temperature is less than 120°F (49°C). Switch will not prevent blower operation when A/C or defrost is selected. Temperature control lock-out valve and switch assembly is located in water by-pass tube assembly.