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1994 Pontiac Bonneville Overheating

Tiny
MARC MAGHONEY
  • MEMBER
  • 1994 PONTIAC BONNEVILLE
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 150,000 MILES
On the freeway my car lost power, started overheating and then began stalling. I still drive the car and have since changed the thermostat and flushed the cooliing system but the car still overheats and does not have the same amount of power it used to have. While driving and when I turn the car off the coolant resevoir is always full and boiling. Any advice would be greatly appreciated. Thanks, Marc.
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Wednesday, February 6th, 2008 AT 7:26 PM

1 Reply

Tiny
BLACKOP555
  • MECHANIC
  • 10,371 POSTS
First thing you should do is make sure the radiator is full, the radiator fins are clean and the cooling fans are coming on.

If those are all good check the water pump, sometimes the blades rust off causing a overheating problem. If that is good you may have a bad headgasket or the ignition timing may be off.
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Wednesday, February 6th, 2008 AT 7:39 PM

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