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My heater is barley producing heat but the fAn part blows the same pressure as it has had always ? What could be the problem

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  • Cars & Trucks Master
  • 450 Answers

Thermostat may need replaced, do it. is your anti-freeze 50/50 ? you need water to produce heat. never run 100% anti-freeze !

Posted on Jan 15, 2013

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  • Contributor
  • 8 Answers

The thermostat or heater core could need rebuilding.

Posted on Jan 15, 2013

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6ya6ya
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SQUIRESXX
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SOURCE: thefront heater fan wont blow out heat

CHECK 1 FUSE, 2. RELAY, 3 NOTHING IS STUCK IN THE VENT TO BLOCK THE MOTOOR

Posted on Feb 02, 2009

  • 16 Answers

SOURCE: Buick LeSabre 2002

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

Posted on Mar 20, 2009

bubba42021
  • 10 Answers

SOURCE: heater blowing cold air

replace your hot to cold switch...


Posted on Jul 12, 2009

arauzvictor1
  • 466 Answers

SOURCE: no heat new thermostat fan blowing cold both

To prove the valve that gives water pass towards the heating if this one does not open you have no heating inside the car

Posted on Dec 12, 2009

  • 12 Answers

SOURCE: 1997 buick lesabre HEATER PROBLEMS The fan

This could be several things. First I would check that the thermostat is not stuck open. This will condition will make the car run cold when it is cold outside.

If this is not the case........and I'm assuming you've already checked that the antifreeze is full, make sure that the heater valve is working. If it is frozen in place then it won't move and won't allow the warm water to circulate through the heater core.

I'm basing my answers on a standard Lesabre. Yours may not have the standard climate control.

Posted on Feb 15, 2010

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Would the heater control valve malfunctioning make the engine overheat blowing hot air out the heater one moment,then not blowing the hot air, temp gage spikes 225 plus. The motor takes awhile to heat up...


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