1999 CADILLAC SLS THERMISTAT

  • Tiny
  • hothead
  • 1999 Cadillac SLS

Engine Cooling problem
1999 Cadillac SLS V8 Front Wheel Drive Automatic 70000 miles

replaced theristat still over heating at low idle will cool at higher idle

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Tuesday, December 1st, 2009 AT 11:08 AM

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  • Tiny
  • factoryjack
  • Expert
  • 4,263 posts

It doesn't seem right that it will overheat at low idle only. Speed equals increased heat, and it should overheat more, and faster with engine speed. I would still suggest a block test for leaking internally.

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Tuesday, December 1st, 2009 AT 10:43 PM

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