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94' Cavalier Z24 heating issues

Tiny
AK_PANTHER24
  • MEMBER
  • 1994 CHEVROLET CAVALIER
Hi,
I have a 94' Chevy Cavalier Z24, 3.1L, with about 108,500 miles on it. I am having trouble figuring out why my blower motor works, but for some reason I am getting zero air flow from my vents. The little bit of heat I get, I'm guessing, is just radiant heat from the heater core.

Thank You
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Wednesday, November 28th, 2007 AT 3:30 AM

3 Replies

Tiny
2CARPRO JACK
  • MECHANIC
  • 11,533 POSTS
Does it work on all speeds? Might want to remove blower motor and be sure the squirrel cage (fan blades) arent spinning on the shaft. Do all other vent controls work properly?
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Wednesday, November 28th, 2007 AT 12:52 PM
Tiny
AK_PANTHER24
  • MEMBER
  • 5 POSTS
- Yes, the fan works correctly on all speeds.
- No, the squirrel cage does not spin freely. In fact, the squirrel cage might be spinning in reverse because instead of drawing air from the outside, if seems to be blowing to the outside. Is there a vacume controlled or electric controlled valve/diaphram of some sort in the firewall between the blower tunnel and heater core?
- As far as I can tell, all the zone controls are operating correctly.
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Wednesday, November 28th, 2007 AT 7:52 PM
Tiny
2CARPRO JACK
  • MECHANIC
  • 11,533 POSTS
Original blower motor? I dont show a cabin filter or anything that would restrict flow. There isnt any control for how much air you get besides fan speed. Might need a new motor. The only way it could run backwards is if it was wired wrong or it shorted internally
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Thursday, November 29th, 2007 AT 7:32 AM

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