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Old February 18th, 2007, 03:35 PM   #1
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Default Taurus cooling question

My Moms 02 Taurus is overheating. I know its not the thermostat. When it overheats it leaks out of what look like a heater valve, which is right by the heater core. It only leaks when it overheats though. Basically what i want to know is could a bad water pump cause it to leak out of that when it overheats. Any other suggestion will help.

Brandon
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Old February 18th, 2007, 05:04 PM   #2
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I just added about a gallon and a hlaf of coolant. It doesnt overheat anymore, and it does get some heat. It will heat up at idle, but cools down to cold when i drive it.
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Old February 19th, 2007, 08:39 AM   #3
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Try removing both the heater core lines and push compressed air through it. It might be a clogged heater core, so it only gets heat when the rpm's are up and it has more pressure to push through the clog.
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Old February 19th, 2007, 01:31 PM   #4
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Sounds like there is an air pocket in the cooling system. Leave the cap off of the radiator and rev the engine then let off. If there is an air pocket you will see air being "burped" out of the radiator.
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Old February 19th, 2007, 05:17 PM   #5
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Sounds like there is an air pocket in the cooling system. Leave the cap off of the radiator and rev the engine then let off. If there is an air pocket you will see air being "burped" out of the radiator.
The 2002 model should not have a cap on the radiator.
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Old February 19th, 2007, 05:19 PM   #6
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Originally Posted by booblinker View Post
My Moms 02 Taurus is overheating. I know its not the thermostat. When it overheats it leaks out of what look like a heater valve, which is right by the heater core. It only leaks when it overheats though. Basically what i want to know is could a bad water pump cause it to leak out of that when it overheats. Any other suggestion will help.

Brandon

I'd try replacing that valve (so it doesn't leak) then refill the cooling system, bring it up to NOT (Normal Operating Temperature) and then make sure the cooling system is full.

It overheats because it's low on coolant (you put 1.5 gals in). It's low on coolant because it has a leak. Fix those and go from there.
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Old February 19th, 2007, 05:20 PM   #7
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Try removing both the heater core lines and push compressed air through it. It might be a clogged heater core, so it only gets heat when the rpm's are up and it has more pressure to push through the clog.
It gets heat when it idles and loses it when you drive it. (heat at low rpm, none at high rpm).

If the cooling system didn't have a leak and wasn't low I'd bet 40 bazillion dollars it had a bad thermostat.
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Old February 19th, 2007, 05:50 PM   #8
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woops, read it wrong.
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Old February 24th, 2007, 10:24 AM   #9
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My dad's 2000 Sable did the same thing. It ended up being the water pump. The impeller actually rusted away. I hear it's very common for the Fords, and it's partially caused by the Dexcool coolant. Replace the water pump, flush it really good, and stay away from Dexcool.
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Old February 27th, 2007, 06:51 PM   #10
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My dad's 2000 Sable did the same thing. It ended up being the water pump. The impeller actually rusted away. I hear it's very common for the Fords, and it's partially caused by the Dexcool coolant. Replace the water pump, flush it really good, and stay away from Dexcool.
I would never out GM dexcool in a ford, and i think it is the pump. Beacuse the upper hose aint getting hot, but its not overheating.
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Old March 2nd, 2007, 09:51 PM   #11
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the upper hose should still get hot even if the water pump isnt working(hot shit rises). some older tractors didnt even have water pumps the had the radiator mounted a little higher so the hot water would rise up and the cooled water would fall back down to the engine. 1.5 gallons low would cause it to over heat and probly not heat the upper hose. like stated before you should fix your leaks and go from there. if the entire engine cools wile driving it probly has a bad thermostat.
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