I am currently having similar problems with my cougar. It could be your fan relay or as it seems to be in my case your fan motor could have seized up and frozen. Unplug the fan and then try spinning the blades by hand, if they won't move you'll need a new fan motor, and most likely new relay. I have seen brand new fan assemblies go for anywhere between $75 and $120. Hope this helps.
What is the motor size? Run1
check the temperature control sensor....
What is the motor size? Run1
Your thermostat is stuck open.
it is right across from my thermostat and i have a 2000 mercury cougur it srews in and out.
my son bought a 1996 cougar that felt like the transmition was slipping and we had the transmission flushed and it fixed it.
The radiator on a 1999 Mercury Cougar is flushed by draining the radiator, filling it with water, and adding a commercially available radiator flush. The engine is allowed to circulate for 10 minutes, drained, flushed with fresh water, and refilled with coolant.
ON THE TOP OF THE ENGINE WHERE THE UPPER RADIATOR HOUSE CONNECTS...
In a 2002 Mercury Cougar, the thermostat is located on the engine, specifically at the engine's front, near the water pump. To access it, you typically need to remove the upper radiator hose, as the thermostat is housed in a thermostat housing that connects to the engine block. Always consult the vehicle's service manual for detailed instructions and safety precautions when working on the cooling system.
Should be in a removable housing at the engine end of the upper radiator hose
follow the raditor hose it will have to bolts look for the bolts take them off and it inside the hose.
Mercury Cougar was created in 1967.