vehicle

1985 PONTIAC FIERO
134,000 MILES • 6 CYL • 2WD • MANUAL
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FLYGUYCHRIS
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  • 3 POSTS
i have a 85 fiero gt that runs great but i have one problem. it overheats within 10 minutes. the coolant boils out of the recovery tank and leaks into the car through the heater core.
Nov 28, 2010 at 12:12 AM
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RASMATAZ
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  • 75,992 POSTS
Replace the thermostat and see what happens don't work could be the water pump, radiator clogged/defective cap-could be airlock try bleeding it-don't work get it block and pressure tested
Nov 28, 2010 at 12:20 AM
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BUDDYCRAIGG
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I have a few suggestions.
1 some of the V6 water pumps have a plastic impeller that doesn't spin with the shaft.
2 make sure the long tubes that run under each side of the car to get water to the radiator has not been smashed from someone putting it on a lift incorrectly.
3 if you have a leak at the heater core, you need to replace it.
Dec 8, 2010 at 11:07 PM
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BUDDYCRAIGG
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oh, and PS there is a special bleed procedure for the system.
Dec 8, 2010 at 11:13 PM
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BUDDYCRAIGG
  • CERTIFIED EXPERT
  • 2,262 POSTS
I have a few suggestions.
1 some of the V6 water pumps have a plastic impeller that doesn't spin with the shaft.
2 make sure the long tubes that run under each side of the car to get water to the radiator has not been smashed from someone putting it on a lift incorrectly.
3 if you have a leak at the heater core, you need to replace it.

oh, and PS there is a special bleed procedure for the system.
Dec 8, 2010 at 11:13 PM