2000 Pontiac Montana Thermostat

Tiny
BOBKURON
  • MEMBER
  • 2000 PONTIAC MONTANA
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 140,000 MILES
The engine quickly over heated, not gradually. Do you think I am dealing with a thermostat or a water pump?
Monday, August 31st, 2009 AT 10:05 PM

1 Reply

Tiny
BLUELIGHTNIN6
  • MECHANIC
  • 16,542 POSTS
Failing or weak water pumps normally create a very loud noise and also weep coolant from its weep holes. You will need to remove the thermostat and test it to see if its opening properly. Did you notice if cooling fan(s) come on?
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Monday, August 31st, 2009 AT 10:30 PM

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