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1997 Chevy Cavalier when driving engine coolant tep drops

Tiny
VCAAA5
  • MEMBER
  • 1997 CHEVROLET CAVALIER
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 111,000 MILES
I just changed the thermostat and water pump when driving 45 mph or less it warms up to normal operating temp when I go 55mph or faster the coolant temp starts droping to luke warn and I get no heat in car It worked fine before the repairs
Friday, April 3rd, 2009 AT 6:14 PM

5 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,779 POSTS
Hi:
It sounds like you got a bad t-stat and it's not closing as the temp drops. I would start by trying a new one.

Let me know if it works.

Joe
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Friday, April 3rd, 2009 AT 6:25 PM
Tiny
VCAAA5
  • MEMBER
  • 4 POSTS
I tried a new thermostat and it is still the same
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Saturday, April 4th, 2009 AT 6:52 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,779 POSTS
THat is really the only thing that can contribute to this problem. Are you sure it was replaced pointing in the right direction?
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Saturday, April 4th, 2009 AT 12:30 PM
Tiny
VCAAA5
  • MEMBER
  • 4 POSTS
Yes the thermostat will only go in one way
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Saturday, April 4th, 2009 AT 12:42 PM
Tiny
VCAAA5
  • MEMBER
  • 4 POSTS
I put an USA MADE THERMOSTAT IN AND IT WORKS FINE NOW. THANK YOU
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Saturday, April 11th, 2009 AT 7:36 PM

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