heater core may be partially plugged up or the heater hose may be collapsed so that in motion the cold air can contribute to cooling the small amount of coolant reaching the heater but at a motionless idle the warm engine compartment helps keep the heater producing warmth
drain approx. 1 gallon of coolant from the radiator Follow upper radiator hose to housing on engine Remove housing Make note how thermostat is installed Clean surfaces well Replace thermostat and gasket Re-fill coolant slowly to prevent an "airlock" Start engine and look for leaks Run engine to normal operating temperature with heater on Re-check coolant level
Should be in a removable housing at the engine end of the upper radiator hose
Normall follow the top radiator hose to housing "T" should be in housing
Should be in a removable housing at the engine end of the upper radiator hose
it is right across from my thermostat and i have a 2000 mercury cougur it srews in and out.
Follow the upper radiator hose to engine--should be located in housing that hose connects too.
Fill the radiator to the top with coolant. Start the car and keep checking the coolant level. The coolant level will drop when the thermostat opens up, so refill it.
cougar 99 where is coolant temperature sensor
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.
Replacing the thermostat on a 2002 Mercury Cougar is generally considered a moderate DIY task. It typically involves draining the coolant, removing the necessary components to access the thermostat, and then replacing it, which may require some basic tools. While it's not overly complicated, it can be time-consuming and may be challenging for those without mechanical experience. Proper precautions should be taken to avoid coolant spills and ensure a proper seal upon reassembly.
It is at the bottom front of the coolant reservoir.
Plugged heater core maybe. Maybe the thermostat. Coolant keeps your engine cool under duress. If the thermostat is stuck open, the engine is staying too cool. Your heat is run off of your engine temperature.