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Car Overheating only while brakes are applied or air is on

Tiny
RHORNE
  • MEMBER
  • FORD
I have a Mercury Sable 1999, v-6, with 94,000 miles. My car overheats only when the brakes are applied and sitting idle or when the air conditioner is on for awhile; however, if I put the car in park it will not run hot. I have had a new water pump put on, thermostat replaced, hoses checked going to radiator for leaks, new reservoir, and the fans are coming on. I do not believe it is the heads because then it would be running hot at all times. Please help before I have to spend a fortune on my car. It has been checked out by Firestone who could not diagnose the problem.
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Monday, May 22nd, 2006 AT 12:54 PM

2 Replies

Tiny
LARRYHE
  • MEMBER
  • 8 POSTS
The fans are on all the time? Even when it is over heating?
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Wednesday, May 24th, 2006 AT 12:45 PM
Tiny
RHORNE
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  • 2 POSTS
They seem to be running whenever I check; however, I haven't looked every time it runs hot.
R. Horne
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Wednesday, May 24th, 2006 AT 2:56 PM

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