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

2007 SATURN AURA
6 CYL • 2WD • AUTOMATIC
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TOM ROTH
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  • 2 POSTS
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?????
Jan 19, 2011 at 9:38 PM
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SATURNTECH9
  • ✓ASE Certified Mechanic
  • 30,869 POSTS
  • ASE Certified Mechanic
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.
Jan 20, 2011 at 1:20 AM
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TOM ROTH
  • MEMBER
  • 2 POSTS
Yep, I found the radiator leaking, all fixed that you.
Jan 20, 2011 at 3:23 PM
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SATURNTECH9
  • ✓ASE Certified Mechanic
  • 30,869 POSTS
  • ASE Certified Mechanic
Good to hear, please use 2CarPros anytime we are here to help.
Jan 21, 2011 at 3:42 AM
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