0
Why would a 99 Cougar have warm air for a while then cool then warm then cool again and always warm at idle The coolant level is correct and the air was bled out behind the thermostat housing?
Wiki User
∙ 14y ago
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
Wiki User
∙ 14y ago
Add your answer:
Earn +20 pts
How do you replace the thermostat on a 1998 Mercury Cougar?
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
Where is the thermostat on a 1993 cougar?
Should be in a removable housing at the engine end of the upper radiator hose
Where is the thermostat for a 1999 mercury cougar 2.5L V6?
Normall follow the top radiator hose to housing "T" should be in housing
Where is the thermostat located on a 2002 mercury cougar?
Should be in a removable housing at the engine end of the upper radiator hose
What is the location of coolant temperature switch on a 2000 Mercury Cougar?
it is right across from my thermostat and i have a 2000 mercury cougur it srews in and out.
Where is the thermostat on a 2000 V4 Mercury Cougar?
Follow the upper radiator hose to engine--should be located in housing that hose connects too.
How do you bleed the air out of a 1996 cougar 4.6 liter engine cooling system?
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.
Where is coolant temperature sensor located on a 99 Mercury Cougar?
cougar 99 where is coolant temperature sensor
Where is the coolant level sensor in a 2000 cougar?
It is at the bottom front of the coolant reservoir.
If a 1998 Mercury Cougar heating system does not blow hot air but there is plenty of coolant in radiator what could be the problem?
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.
If your '99 cougar doesn't blow hot air what might be wrong with it?
The Problem is not in the heater core, there is actually just air in the coolant lines that prevent the thermostat from closing and functioning properly To fix it you must bleed out the air. On the back of thermostat housing is a hose with a splice in it. You need to remove 1 clamp, pull the hoses apart and open the overflow tank. When you first separate the hoses you should hear air escaping. Once coolant is flowing from each hose put them back together and your heat problem should be fixed.
Why is there no heat in a 2000 mercury cougar after changing the themostat?
If this happened immediately after changing the thermostat, then the most likely problem is the thermostat was installed backwards.The spring side of the thermostat faces the engine. It's the spring that is reacting to the coolant temperature and driving the valve to open/close.When the thermostat cannot open, that prevents any coolant from ever getting to the heater core. Thus, you shiver a lot!Pop it out, flip it over and you should be all sorts of warm and cozy.
