MY QUESTION IS RELATED TO HEATING

  • Tiny
  • Anonymous
  • 2006 Cadillac DTS
  • 88,000 miles

My question is related to heating. The vehicle will not heat up when idling, but blows warm/hot air air when it is being driven. It appears normal after this, and the temp gauge indicates the appropriate temp. Range. On occassion, the gauge did rise higher, but then returned to normal. I added coolant to the reservoir, but problem continues. I was thinking it may be the thermostat. Any assistance appreciated.

Saturday, October 20th, 2012 AT 1:17 PM

2 Answers

  • Tiny
  • mhpautos
  • Expert
  • 30,495 posts

May well be a faulty thermostat, it may be stuck open or collapsed in the open position, I would be checking this first.

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Saturday, October 20th, 2012 AT 1:19 PM
  • Tiny
  • Wrenchtech
  • Expert
  • 19,840 posts

It could also be low on coolant causing an air pocket or a restricted heater core.

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Saturday, October 20th, 2012 AT 1:20 PM

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