Question about 1995 Buick Regal

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It is overheating and the heater is only blowing

It is overheating and the heater is only blowing cold air so we are not able to cool the engine with the heater. Is it the thermostat or the water pump? Is the matter of the heater not heating related or is that a different problem?

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Could also be that the water level in the radiator is too low.
if water is ok then it could well be as yo ustated, that the thermostat is stuck in the closed position. thus over heating the engine and not letting the hot water out into the cooling and cab heating system.
to test thermostat remove when engine is cold and put in a glass of boiling water and watch to see if it openes.
also try to run you car with the thermostat removed close the housing back up with a gasket fitted. and see if this resolves the problem you may have to choke the car a bit longer as it will take longer to warm up but it should be ok just for a test.

Warning: water cooling systems are under pressure when breaching a system ensure precausing are made not to get burned release the opening valve slowly with a rag over the valve to allow the pressure to release in a controlled way.

Posted on Nov 17, 2009

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To troubleshoot this types of problem,click the link below :----http://howtobyme.blogspot.in/2012/02/heater-blows-only-from-defrost.html
--------Go through the procedure to confirm the issue.

------
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http://howtobyme.blogspot.com/2011/11/engine-overheats-and-heater-blowing.html

---------
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http://schematicsdiagram.blogspot.com/2011/12/heat-blows-cold-on-drivers-side-and-hot.html

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http://technoanswers.blogspot.com/2011/11/all-types-of-car-overheating-problems.html
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http://howtobyme.blogspot.com/2011/11/engine-overheats-and-heater-blowing.html

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