Question about 2003 Buick LeSabre

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2005 Buick Allure heat problem

My heater just blows warm air, i changed thermostat but no differance

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  • Anonymous Mar 23, 2014

    When I turn the heater on in my car, the air doesn't warm up, but the engine heats up

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  • 32 Answers

Well if u changed thermosta did u noticed if both were same & had little hole on top of the old 1 lot of times aftermarket dont have them & u need to drill 1 urself same spot....or could b heater core going out

Posted on Dec 18, 2008

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Blows cold air turn heat on


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Jan 28, 2016 | 2005 Hyundai Tucson

2 Answers

When I put the heat on in my car it blows warm air for a few seconds then goes to blowing out cold air.


The lack of heat in the car has little to do with the car's cooling system, other than the hot coolant is the heat source. 95% of all "no-heat" issues are related to heater controls and/or the heater core itself. Since you get some heat, and then it goes away, this indicates a probable vacuum leak in the heater controls. When you select heat, vacuum is directed to a vacuum motor. This motor operates a vacuum actuator that moves a linkage that moves a door inside the heater box to direct the interior air through the heater core. If this actuator has a leak, it will activate, then as the vacuum leaks off, deactivate. You probably need to have a part replaced in the heater actuator mechanism.

Jan 20, 2015 | 2005 Nissan Altima

1 Answer

2005 jeep liberty blows cold air through the heater.


could be the thermostat if it was just stating to go bad,could also be a vacume problem not letting the door for the ac/heat close all the way for a few min.and if its really cold out like below 35,then its going to take longer to warm up,my jeep takes like around 20 min at idle to warm up.yours could be a case of over cooling in cold weather too ie(electric fans on before it warms up)that would be the thermostatic sensor.

Dec 01, 2011 | 2005 Jeep Liberty

1 Answer

I have a 2002 Buick Century and my heater will blow air but only heats air occasionally.


If you know where the heater hoses are, lift the hood after car has warmed up I mean the engine running for at least five minutes, feel the heater hoses, if they are warm or hot and still no heat from the heater, you have an in line proiblem. if hoses remain cold, replace the thermostat with a winter thermostat.

Nov 10, 2011 | 2002 Buick Century

1 Answer

I can,t get heat to work in side the car changed rad did flush changed thermostat still blows cold inside car


Do yo know if the heater core is getting Flow. when engine is warmed up. feel heater hoses hoing into and out of heater core. if both are warm then you have a blend door problem. if one is warm and one is cold and coolant is full and no air locks you have a plugges heater core. reverse flushing sometime works. otherwise it would need to be replaced.

Oct 09, 2009 | 1995 Buick Skylark

1 Answer

Heater blows cool air & never heats up.


I changed the thermostat. It works like a charm now!!

Dec 16, 2008 | 2005 Chrysler Town & Country

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