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A number of things. The fan relay or temperature switch may be bad (electrical fans), the fan clutch may be worn out (older vehicles), the radiator could be clogged internally, too much debris in front of radiator (air can't get through to cool collant), blown head gasket, or a cracked head. Also the thermostat could have been installed backwards.
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∙ 12y ago
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Why does car overheat?
There could be many reasons. Not enough coolant or bad flow, faulty thermostat, low oil. If the coolant freezes then it will overheat. If your car continues to overheat then you should have the coolant flushed and thermostat replaced.
Can a car overheat with a stuck open thermostat?
Usually the car would run cool, unless the thermostat is stuck partially open.
Why would a car blow cold air and overheat at the same time if the thermostat has already been replaced and there is sufficient coolant?
Could be a head gasket or a warped or cracked Cylinder head.
Why would your car overheat if you drove with emergency brake on and thermostat says hot after removing brake and cooling down?
thermostat is more than likely stuck shut from the overheat. Have to be changed.
Will a bad thermostat make your car overheat?
yes
How do I know if I replaced a thermostat on a 1998 Subaru Legacy correctly?
There wont be any leaks, the car wont overheat and it will stay in the normal operating temperatures.
If a car has no thermostat what would cause it to overheat?
U NEED A THERMOSTAT. THAT IS WHAT HOLDS THE COOLANT IN THE RADIATOR, SO IT CAN COOL DOWN BEFORE IT GOES BACK IN THE MOTOR.
Will a bad thermostat cause a car to lose acceleration?
By itself, the thermostat would have to be stuck closed causing a severe overheat condition to cause a loss of power.
What was cause a Lincoln town car to overheat?
sometime the fan do not work which can cause the car to overheat. Also it can be a fuse for the fan. Check your thermostat.
Is it safe to drive car with failed thermostat?
No beaxause it can overheat and catch fire No beaxause it can overheat and catch fire
What would happen if you put the thermostat in the wrong way?
Just won't properly work car will most likely overheat
What would cause a 63 dodge dart to overheat when a themostat is installed?
If you drive the Dart like I would (like a bat out of hell) the car would most likely overheat from fast acceleration, and more strain on the engine than what is needed. If you drive legaly, it could very well be the thermostat. Be sure that you use the correctly dilluted antifreeze.
