Question about 1999 Pontiac Grand Am GT

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No heat from my heater, could it be as simple as a themostat?

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Absolutely , and it would be the first thing I would replace. Not only is it the cheapest part to try, but is quite common to fail on your vehicle.

Posted on Dec 10, 2009


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I just installed a thermostat in my 2000 lincoln ls and now the heater and defrost dont work. heater just blows out cool air

make sure you installed the themostat the right way and that it has the proper heat range for your vechicule.normally after installing a thermostat,you remve the rad cap and fill the radiator with antifreeze,then srart the car and wait till the themostat opens and prestone level falls.refill rad and put rad cap back on.turn on heater and you should have heat,if not have your rad cap tested to make sure it is holding the proper pressure.your antifreeze mixture should be 50\50.

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No heat blows cold air only for ford f-250

i asume you checked the coolant level , so you either have a bad themostat or heater control valve or blocked heater core

Oct 28, 2012 | 2004 Renault 181

1 Answer

Where is the thermostat located in a 2001 BMW 325i? Would a bad thermostat cause the heater/air conditioner blower to not function?

The themostat is located on the front part of the engine next to the water pump (black peice of plastic with two hoses on it). If the thermostat was bad, you would have overheating issues going on.

This my sound simple but I have to ask, have you messed with the dial between the two grills over the radio? Max heat would be 3 red dots while max cold is 3 blue dots. If it's in the middle with no dots then that may be your problem.

Dec 13, 2010 | 2001 BMW 325

1 Answer

2004 vw passet no heat replaced watr pump ,themostat,cool sensor,flushed,car runs fine no heat

i think u have air traped in heater core ,seat in car and push gas pedal up too 3000 RPM and hold it for1-2 minutes turn heat on and should come on good luck

Feb 25, 2010 | 2004 Volkswagen Passat

1 Answer

97 chev mal the heat will not blow warm or hot air only cold is that the heater core or themostat?

check the level of the fluid in the radiator if it's full then check the water valve on the heater hose.

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1 Answer

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this sounds like a air temperature control blend door motor issue.

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