my 1997 Cadillac STS runs hot fast when driving.

1997 CADILLAC SLS
125,000 MILES • V8 • FWD • AUTOMATIC
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JTAYLOR
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  • 2 POSTS
my car runs hot fast but every one says that it isn't the block or my head gaskets, so can it possibly be the freeze plugs or the thermostat?
Dec 14, 2010 at 11:49 AM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
Start by replacing the thermostat and see what happens
Dec 14, 2010 at 12:10 PM
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DOCFIXIT
  • ✓Experienced Mechanic
  • 18,828 POSTS
Suspect haedgasket have radiator tested for traces of exhaust NAPA sells tets kit for @$20
Dec 14, 2010 at 12:11 PM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
It will look like this:

Image (Click to enlarge)
Attached Media
Dec 14, 2010 at 12:38 PM
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