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Heater blows cold while car stopped?

Tiny
DN2NET
  • MEMBER
  • 2000 MERCURY SABLE
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 102,296 MILES
Hi, my car's heater begins to work fine after the car runs a few minutes & then is driven a few miles. However, while the car idles when stopped, the heater blows cold. Do you know why this would be & is there a self-help solution?
Sunday, December 16th, 2007 AT 9:58 AM

2 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Check the thermostat and make sure the coolant level is correct.
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Sunday, December 16th, 2007 AT 1:10 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,513 POSTS
I agree with RASMATAZ, when the engine is cold remove the radiator cap and check the coolant level. Also, the heater core I would use a garden hose to flush out the core. Please go over this video to help you fix the problem.

https://www.youtube.com/watch?v=SNRb6pSwYuU&t=1s

Please go over this guide and get back to us.
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Wednesday, October 30th, 2024 AT 6:40 PM

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