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Lost with simple overheating problem

Tiny
CDRENGENBERG
  • MEMBER
  • 1995 CHEVROLET CAPRICE
  • V8
  • 2WD
  • AUTOMATIC
  • 213,000 MILES
My Chevrolet Caprice Classic 4.3L is trying to overheat, the temp. Climbs after warm-up. I already replaced the Water Pump, could it be a faulty thermostat or ECT sensor?
When I pulled out the ECT sensor out of the old water pump, I cleaned it with a wire brush and it looked okay. Also, I put a new thermostat gasket on. Maybe the thermostat got ruined from excessive heat? When I added water to the system after replacing the water pump, I didn't bleed it, could there be air in the system causing slight temp. Climbing?
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Tuesday, January 11th, 2011 AT 5:46 PM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,867 POSTS
The first thing I would have done would have been the thermostat. Replace (or remove and test it. Direction on homepage / DIY section). As far as bleeding the system, there could be an air lock. You should bleed it.
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Tuesday, January 18th, 2011 AT 10:13 PM

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