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1993 Chevy Cavalier heater does not work properly

Tiny
2CP-ARCHIVES
  • MEMBER
  • 1993 CHEVROLET CAVALIER
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 109,000 MILES
1993 Chevy Cavalier Z24 mileage: 109,000. The heater does not work properly. Can have the hi/low switch in any position and it still only blows slow but the sound increases with a higher setting like it is blowing hard but it isn’t. This problem happens with the heat or air-con. Getting cold here in Minnesota trying to get fixed before the sub-zero temperatures come, thank you. How much will this repair cost?
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Tuesday, November 9th, 2010 AT 8:56 PM

1 Reply

Tiny
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  • MEMBER
  • 4,540 POSTS
The doors in the heater ducts may not be working properly. They are controlled by vacuum. Check for vacuum hoses that may be cracked or a loose connection. Another source of the leak may be the vacuum switch on the back of the heater/air condition control on the dash. Somewhere in the vacuum system is a check valve that may have failed. It is usually part of the vacuum reservoir tank.
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Tuesday, November 9th, 2010 AT 8:57 PM

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