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My 1994 Buick LeSabre heater won't bow hot air just cold air and I changed the thermostat yesterday...what's the problem?

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  • jimrinker Jan 07, 2009

    Heater only blows out only lukewarm air on my 1993 Lesabre. Was going to swap out thermostat. Is there another place I should look first?

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Heatercore

Posted on Dec 30, 2008

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Blows cold air turn heat on


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    repairpal.com > Problems > Buick > LeSabre
    ... Cadillac, Chevrolet, Chrysler, Dodge, FIAT, Ford, Geo, GMC, Honda, Hummer,Hyundai, Infiniti, Isuzu, Jaguar ... I'll turn up the temp on the dual control to get heat,

Jan 28, 2016 | 2005 Hyundai Tucson

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1994 Buick Lesabre calls for a 160 or 180 degree thermostat


that is the opening temperature for the thermostat
it opens at 160 degrees which is good for hot weather operation or another with 180 degrees which is good for cold weather operations
The differences is 160 opens sooner to start coolant circulation to keep operating temperature low where the 180 keeps shut and allows the operating temperature to rise up as soon as it open the cold air will quickly cool the coolant.

Feb 28, 2015 | 1994 Buick LeSabre

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I just hang thermostat in 1994 buick lesabre and still get no heat what can be wrong


Either the controller is not moving the valve or your heater core is clogged and needs to be back flushed.

Sep 22, 2014 | 1994 Buick LeSabre

1 Answer

I've got a 96 Buick Regal Custom 3.8L V6. It's been running hot for a while. Yesterday the heater worked fine then last night it started blowing cold. I knew I had a cracked radiator, so I replaced the...


the one thing that comes too mind is trapped air-when i do a radiator I always start up and warm engine so thermostat cycles a few times to make sure that you dont trap air in colling system. you did not say so but if you didnt, its really not a bad idea to change thermostat and gasket when digging into colling system. they are usaully fairly cheap.

Jan 26, 2011 | 1996 Buick Regal Olympic Gold

1 Answer

Buick LeSabre 2002 My heater does not produce hot air. The fan works but blows only cold air.


just one idea my freinds buick if it gets low on antifreeze it will not blow hot air maybe you can check the antifreeze level

Mar 15, 2009 | 2000 Buick LeSabre

2 Answers

NO HEAT 2000 buick lesabre


If this Buick has a 3.8L, there are air bleed valves that must be opened to ensure the cooling system does not develop an air lock. (Wich would cause a no heat condition). If the thermostat is functioning properly you may want to check if there is flow through the heater core. Check by feeling each heater hose at the firewall with engine at opperating temp. They should both be hot and close in temp. A noticable temp difference in the two hoses would most likely be a flow problem, either from an air lock, bad t-stat or plugged heater core. Good luck.

Feb 04, 2009 | 2000 Buick LeSabre

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