1977 Cadillac Brougham automatic climate control problem

Tiny
VEGA88
  • MEMBER
  • 1977 CADILLAC FLEETWOOD BROUGHAM
  • V8
  • 2WD
  • AUTOMATIC
  • 133,000 MILES
For some reason my automatic climate control device wont work, when I turn the car on, I dont hear the fan kicking in. The only function that works is the defrost function, everything else dosent work. Sometimes I hear a quiet rumble or a hissing noise, but no air comeing through out of any of the vents. The times I noticed it actualy working is durning the day time, but in the morning or at night it dosent work it all. How can this be fixed?
Wednesday, October 20th, 2010 AT 11:09 PM

1 Reply

Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS
The rumble could be the blower motor bearings, and you should check the motor. Most easily done by carfully using a fused jumper wire from the battery terminals to the blower motor. Unplug the motor from thew connector and apply + wire to the blower Orange wire. And the _ wire from the battery to the black wire, if the blower does not come on, replace it.
Was this
answer
helpful?
Yes
No
Wednesday, October 20th, 2010 AT 11:59 PM

Please login or register to post a reply.

Related Defroster Content

Vents Stay in Defrost Mode
GUIDE
Vents Stay in Defrost Mode
Your car's defroster is designed to remove moisture (fog) from the inside of the windshield in cold weather. It can be a safety problem if the defroster is not working, or...
VIEW MORE