My car loses heat very quickly while it is idling.

Tiny
CADILLAC MAK
  • MEMBER
  • 2004 CADILLAC ESCALADE
  • 100,000 MILES
The only way it comes on is if I would apply some gas but it When my car is idling & the heat is on it loses heat. I then would have to step on the gas for a few seconds for the heat to come back, it ongoing.?Would still reoccur. I don't have any problems while I'm driving, only when I'm in park & the ignition is on. Any help would be appreciated, thank you!
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Wednesday, January 4th, 2012 AT 10:29 AM

2 Replies

Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
That would indicate possible low coolant level or restricted heater core. You might try removing both heater hoses and backflushing the heater core with water pressure.
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Wednesday, January 4th, 2012 AT 10:51 AM
Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
Check for a stuck open thermostat as well.
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Wednesday, January 4th, 2012 AT 1:06 PM

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