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Sitting idle at a stop light the heater goes to cool?

Tiny
TOM ROTH
  • MEMBER
  • 2007 SATURN AURA
  • 6 CYL
  • 2WD
  • AUTOMATIC
My car has just started doing this - when I start it or am sitting idle at a stop light the heater goes to cool instead of staying warm but goes back to warm when the car is in motion. No warning lights come on - what can this be?
Wednesday, January 19th, 2011 AT 9:38 PM

3 Replies

Tiny
SATURNTECH9
  • MECHANIC
  • 30,870 POSTS
It sounds like you have a coolant leak, I would wait until the engine is cold then check the level, here are two guides to help us fix it.

https://www.2carpros.com/articles/car-heater-not-working

and

https://www.2carpros.com/articles/car-is-leaking-coolant

Please go over these guides and report back.
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Thursday, January 20th, 2011 AT 1:20 AM
Tiny
TOM ROTH
  • MEMBER
  • 2 POSTS
Yep, I found the radiator leaking, all fixed that you.
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Thursday, January 20th, 2011 AT 3:23 PM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,870 POSTS
Good to hear, please use 2CarPros anytime we are here to help.
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Friday, January 21st, 2011 AT 3:42 AM

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