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Check to see if the coolant fan is running. With the engine hot, and running, open the hood and see if the fan is turning. If it's not, then either the fan,temp sensor, relay or wiring is bad.

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Q: What would cause a 91 Buick Century wagon with 200000 miles to lose coolant NO puddles and the oil is perfect after a few days the radiator is almost empty?
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You have a 1999 cougar it is runnig hot could it be that you are missing a fuse relay?

check the themostat and water pump. if not those, then check the radiator for leaks or cracks. if you notice puddles of coolant anywhere you parked, u have a big problem


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Where is the coolant leak in a 1997 Ford Taurus with no puddles no dripping but you can smell it and it goes through a quart of coolant in a week?

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Why does my car overheat and the heater blows warm and cold air?

Theres a couple of things that can cause this. First, check ALL the hoses to be sure you dont have a leak. make sure the radiator and reservoir are not leaking. Then you need to check the thermostat. The easiest way i know to do this is run the engine to normal temp, providing you can do this without overheating. there are two hoses coming out of your radiator, one is coolant to the engine, one is the warm coolant back to the radiator. Touch them both, CAREFULLY DO NOT GET BURNT or hurt by any other engine parts such as the engine fan!. if one of them is WAY cooler than the other your thermostat is stuck and you need to replace it. You may have a head gasket blown,if you are losing coolant and do not see any puddles, like this coolant has "mysteriously vanished" get this checked out! another possibility if your heater core is shot, if its not the thermostat, your hoses are all intact and your radiator and reservoir are not leaking, this is likely your problem. OR, you may have a water pump problem, if you have a large puddle under your engine, not near the radiator, get this checked by a professional mechanic ASAP. you can cause serious damage running a car hot.


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