1999 Cadillac Deville temp goes up to 230

1999 CADILLAC DEVILLE
11,199 MILES • V8 • FWD • AUTOMATIC
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SANDYLCORLEY
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  • 1 POST
After driving a short distance the engine temp can hit 220-230 degrees. Once the RPM's go up the temp goes down. What is the optimal temp it should be running at? Is this a serious problem?
Sep 26, 2009 at 4:56 AM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
Replace the thermostat and test the coolant temperature sensor-
Sep 26, 2009 at 7:16 AM
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