Car overheating

Tiny
MARYLOPEZ
  • MEMBER
  • 2000 PONTIAC GRAND AM
  • 3.4L
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 143,000 MILES
My car is overheating. It has a new water pump and thermostat. There are no leaks under the vehicle. What else could it be?
Tuesday, July 11th, 2017 AT 8:45 PM

1 Reply

Tiny
CARADIODOC
  • MECHANIC
  • 34,100 POSTS
Radiator plugged internally. Radiator plugged with a butterfly collection. Red Dex-Cool antifreeze wasn't changed often enough. (We call that stuff "Dex-Mud"). Cooling fins on radiator corroded and crumbling away.

One of the more common causes of overheating is a leaking cylinder head gasket. Your mechanic can perform a chemical test to verify that. The water pump and thermostat are two of the least likely causes of overheating.
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Tuesday, July 11th, 2017 AT 10:30 PM

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