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1991 Chevy Cavalier heat not blowing

Tiny
SOCALPUNK05
  • MEMBER
  • 1991 CHEVROLET CAVALIER
Heater problem
1991 Chevy Cavalier 6 cyl Front Wheel Drive Manual

i have a 1991 cavalier, when I turn the fan on to blow heat, it is extremly weak. I change it from defrost to vents to floor and its still weak. But I can hear the fan blowing hard. I can feel that the heat is working, but cant figure out what could be blocking it from blowing.
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Monday, February 15th, 2010 AT 10:46 AM

3 Replies

Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
Hi, does defrost have good airflow? If the actuators are vacuum controled, on some systems, it will default to defrost. The air will only come out on defrost. If that is the issue, check vacuum source. If vacuum isn't the issue, then the directional door/s under the dash aren't working like they should.
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Monday, February 15th, 2010 AT 10:55 AM
Tiny
SOCALPUNK05
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  • 2 POSTS
Ive tried every settin, defrost, floor, mix, vent and its all a weak. I can hear the sound like its trying to switch settings, and hear the blower like its blowing hard.

How easy of a fix is it, to fix the door?
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Tuesday, February 16th, 2010 AT 11:07 AM
Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
Hi, I would have to look at it.
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Tuesday, February 16th, 2010 AT 12:11 PM

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