How do you change your thermostat in your 1992 Mercury Cougar V6?

Answer 1

The thermostat is actually a very simple change, but you need a cold engine to work on it, as you will be interacting with the engine coolant directly. Disconnect the upper radiatior hose which goes to the front of the engine. At the engine, this hose is connects to a metal fitting (reall a small bent pipe with a flange), which in turn connects to the engine itself. Remove this fitting, and the thermostat is exposed, and can be swapped out. When finished, reverse this process, top off your coolant, and you're all set Please note, when you make this change, you'll need to replace the associatated gasket. Be sure to clean off any remainder from the old gasket, as any residue will cause a bad seal. Also, this is a good time to do a coolant flush, and it's probably not a bad idea to do so. If you have continued overheats, or are loosing coolant, it may be a sign of a MUCH more serious problem, the dreaded head gasket failure! This is an all too common failure on the Ford/Mercury V6, due to the upper and lower halves of the engine being dissimilar metals. If overheating persists, don't hesitate to have a pro look it over. The thermostat is actually a very simple change, but you need a cold engine to work on it, as you will be interacting with the engine coolant directly. Disconnect the upper radiatior hose which goes to the front of the engine. At the engine, this hose is connects to a metal fitting (reall a small bent pipe with a flange), which in turn connects to the engine itself. Remove this fitting, and the thermostat is exposed, and can be swapped out. When finished, reverse this process, top off your coolant, and you're all set Please note, when you make this change, you'll need to replace the associatated gasket. Be sure to clean off any remainder from the old gasket, as any residue will cause a bad seal. Also, this is a good time to do a coolant flush, and it's probably not a bad idea to do so. If you have continued overheats, or are loosing coolant, it may be a sign of a MUCH more serious problem, the dreaded head gasket failure! This is an all too common failure on the Ford/Mercury V6, due to the upper and lower halves of the engine being dissimilar metals. If overheating persists, don't hesitate to have a pro look it over.