1989 Chevy Celebrity Engine running warm

1989 CHEVROLET CELEBRITY
120,000 MILES • 6 CYL • FWD • AUTOMATIC
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ANDREWC24301
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  • 2 POSTS
Hi:

My 89 celebrity seem to run warm, particually on the interstate or climing large grades. It gets very close to the edge of the red line, then goes back down.

I notice the fan doesn't come on until it gets very close to this red line. Then it shuts off before it gets below 220.

It has yet to "overheat" the temp light has never come on, but I'm wondering what can I do to remedy this problem.
Apr 18, 2009 at 8:31 PM
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RASMATAZ
  • ✓ASE Certified Mechanic
  • 75,992 POSTS
  • ASE Certified Mechanic
Cheap fix replace the thermostat and report back and will get into more complicated stuffs
Apr 18, 2009 at 8:56 PM
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ANDREWC24301
  • MEMBER
  • 2 POSTS
Hi:

Thanks for the timley responce. I replaced the t-stat today, still had the same issues. It seems like the cooling fan is coming on at the wrong time.

I'm wondering what is the best method to test actual temprature of the coolant to see if the guage is accurate?
Apr 18, 2009 at 11:46 PM
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RASMATAZ
  • ✓ASE Certified Mechanic
  • 75,992 POSTS
  • ASE Certified Mechanic
Test the coolant temperature sensor and if it has a engine temperature gauge switch test that too-
Apr 19, 2009 at 12:20 PM
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