2000 Chevy Impala engine overheating

Tiny
FRANKIE8991
  • MEMBER
  • 2000 CHEVROLET IMPALA
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 120,000 MILES
First I have replaced the water pump and thermostat. And the water temp would get real hot then all of a sudden it would drop down to cool then it will go back up then back down. What could cause this. Thanks Frankie
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Friday, February 6th, 2009 AT 5:22 PM

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Tiny
MERLIN2021
  • EXPERT
Air in the cooling system.
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Friday, February 6th, 2009 AT 5:26 PM

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