Heater

Tiny
ROBERTA DRENT
  • MEMBER
  • 1992 CADILLAC DEVILLE
  • V8
  • FWD
  • AUTOMATIC
  • 164,200 MILES
Heater does not come on until thermostat is set at 90. Is it the temp sensor?
Monday, December 6th, 2010 AT 12:56 AM

1 Reply

Tiny
FACTORYJACK
  • MECHANIC
  • 4,159 POSTS
It is possible that the in-car temp sensor is faulty. Setting it to max heat(90) overrides the auto feature and ignores sensor values. Under the cadillac script emblem over by your glove box is where the aspirator draws air in for that sensor. It may be clogged with lint, or some other obstruction. The aspirator tube may be disconnected as well.
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Thursday, December 9th, 2010 AT 4:41 AM

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