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1998 Mercury Mystique Running hot

Tiny
JTSANSWERS
  • MEMBER
  • 1998 MERCURY MYSTIQUE
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 15,500 MILES
My car is running at 230 degrees according to the computer and the temp gage. When we hold a laser temp gage to the system it reads at 210 degrees. We already changed the water pump, both coolent temp sencers, the thermostat and flushed th system 4 times. The radiator flows fast and there are no leaks in the system. The system also pressure tested fine. Please help me my only next step is to change the radiator which I think is working properly.
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Monday, July 14th, 2008 AT 11:49 AM

3 Replies

Tiny
LEGITIMATE007
  • MECHANIC
  • 5,121 POSTS
Are you buying the correct temperature rated thermostat? And make sure you bleed the system too
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Monday, July 14th, 2008 AT 2:17 PM
Tiny
JTSANSWERS
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  • 3 POSTS
How do I bleed the system properly?
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Monday, July 14th, 2008 AT 4:35 PM
Tiny
LEGITIMATE007
  • MECHANIC
  • 5,121 POSTS
I would take the radiator cap off, and start the car with the radiator cap off, and let it reach operating temp, if theres air in there, when the thermostat opens, the coolant will bubble and, probably overflow a little and release the air, when it stops shut car off and top the coolant off, put caps back on. And drive it see how it does.
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Monday, July 14th, 2008 AT 11:04 PM

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