1994 Pontiac Bonneville Overheating

1994 PONTIAC BONNEVILLE
150,000 MILES • 6 CYL • 2WD • AUTOMATIC
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MARC MAGHONEY
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  • 1 POST
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.
Feb 6, 2008 at 7:26 PM
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BLACKOP555
  • ✓ASE Certified Mechanic
  • 10,386 POSTS
  • ASE Certified Mechanic
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.
Feb 6, 2008 at 7:39 PM
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