Question about 1994 Pontiac Grand Am

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I have a 94 grand am gt, i just put a new thermostat in and it blows out warm air for about 20 sec's then goes to cold. any help??

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Sounds like the control flap in the duct system that changes the airflow from heating to cooling has failed. It's not staying in place for heat to flow but returning to the cooling position.

Posted on Dec 30, 2010

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Posted on Jan 02, 2017

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How do I fix a thermostat that sticks and temp goes to 250 degrees on a 1999 Grand Am. I put a new thermostat in


New thermostats do not stick. With the radiator full and the cap off check for air bubbles at idle. blown head gaskets blow bubbles

Sep 10, 2014 | 1999 Pontiac Grand Am GT

1 Answer

Heater isnt blowing warm air in 2003 grand caravan


Assuming the radiator is full of coolant, you are describing a faulty thermostat. The thermostat is closed when the engine is cold to restrict coolant flow until it warms up.

Feb 01, 2013 | 2003 Dodge Caravan

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My 1996 jeep grand cherokee is blowing cold air for the first 30 minutes of my ride home (20-degree weather), then warms up slightly but never gets hot -- i'm guessing heater core (it has 200k+ miles)


It is most likely a thermostat. As your car gets older the thermostat begins to lose its spring like properties and stays open all the time causing your car to never warm up.

If you can't tackle right away, start your car in the morning and let it run for about 15 minutes to warm up. Be sure to turn the heat on full blast and recirculate the air.

Dec 15, 2009 | 1996 Jeep Grand Cherokee

1 Answer

My 01 grand am gt is overheating the cars heat will only blow cold air and alot of thick white smoke comes out of the exaust


White smoke is a sign of burining antifreeze. When heater is not blowing warm air, that is a sign of faulty heater core.
No power, coolant loss, overheating, is sign of headgasket leak.
Double check your thermostat as well.

Sep 09, 2009 | 1999 Pontiac Grand Am GT

1 Answer

94' Maxima - I warm up my car and the engine shows


Hello,it seems your car wont stay warm while driving, this is going to be a rather easy and inexspensive fix the thermostat is going to be stuck open. You need to replace the thermostat. Thank You

Feb 21, 2009 | 2004 Nissan Maxima

2 Answers

94 Grand AM NO HEAT, just blows cold air


your description ends. what have you put in...
if you have put stop leak in the car it can clog your heater core.
check your thermostat
check your engine oil if it looks milky you have a head gasket problem aslo check your coolant if there is oil in your coolant you have a head gasket problem

Feb 04, 2009 | 1994 Pontiac Grand Am

1 Answer

No heat


try the alternator. if not maybe the water pump

Jan 03, 2009 | 1999 Pontiac Grand Am GT

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