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2006 Buick Allure little or no heat guages good coolant full doors work full air delivery

New 'stat system bled.Do these cars have blockage problems in heater core or system anywhere. Have no proper tools to check spin type rad cap

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Posted on Jan 02, 2017

GodBlessU
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SOURCE: 2002 Buick LeSabre no heat,

Hi

The first thing to check is the coolant level and to insure the thermostat is working. Usually just putting in a new thermostat is the best thing to do. When you have already replaced it then make sure there are no air bubbles in the cooling system. Here's the procedure for bleeding the cooling system....

Loosen the air bleed bolt in the thermostat housing, then fill the radiator to the bottom of the filler neck with the coolant mixture. Tighten the bleed bolt as soon as coolant starts to run out in a steady stream without bubbles.

With the radiator cap off, start the engine and let it run until warmed up (radiator fan comes on at least twice). Then, if necessary, add more coolant mix to bring the level back up to the bottom of the filler neck.

Put the radiator cap on tightly, then run the engine again and check for leaks.

Check the links for the diagram...

http://z.about.com/d/autorepair/1/0/q/5/62455816.gif

The next thing to check is the Heater Control Valve. With the heat selector on HOT, the valve should be open. Feel the heater hoses, they should be equally hot on both sides. If not, the valve is not opening and needs to be replaced.

http://z.about.com/d/autorepair/1/0/r/5/78721688.gif

If after this you still have no heat, you need to check the HVAC controls. There is a cable that goes from the temperature selector switch to an air mix door. Check to see that it is still attached on both ends and not kinked. Its been seen many cables bend and distort at the air mix door.

http://z.about.com/d/autorepair/1/0/s/5/56533993.gif


Please get back to us if you have further query else please accept the suggestion.

Posted on Feb 21, 2011

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1 Answer

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The vehicle will overheat if the cooling system is not properly filled with coolant and all the air bled from the system. With the system full and void of air, you then must assess the operation of the rad fans for proper operation as well as t-stat operation

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ok, you did a coolant service with STAT,

and it failed.

tell us what works right and wrong, symptoms only.

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under heating? ( fan stuck on , up North can cause huge cold engine)

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