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1985 Pontiac Fiero coolant is overflowing

Tiny
FRANK7131989
  • MEMBER
  • 1985 PONTIAC FIERO
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 99,356 MILES
My car was fine up until a few minutes ago where the coolant goes started making funny noises and then the coolant started to over flow the dummy light for the temp came on I dont think the temp gauge works it has never moved past 100. It does not have a leak its just over flowing I cant tell if the thermostat is good or bad because the temp gauage doesnt work I will check it as soon as I find out where it is but I would like to know if it is possibly a different problem frst (im thinking the cooling system is clogged)
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Thursday, May 13th, 2010 AT 8:25 PM

3 Replies

Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS
The first thing to check would be the thermostat. Follw the upper radiator hose, takes you right to it, when was your last flush and fill?
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Friday, May 14th, 2010 AT 2:29 AM
Tiny
FRANK7131989
  • MEMBER
  • 2 POSTS
I just got the car a eek ago so I dont know.
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Friday, May 14th, 2010 AT 11:32 AM
Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS
Go to Autozone, they have a loaner tool program, rent a pressure tester and check the cooling system, also buy flush kit, fast flush, antifreeze and a tstat. Pressure test the cooling system for leaks, if non found, remove stat flush the system, replace the tstat. If leaks are found, repair and then replace tstat and refill.
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Friday, May 14th, 2010 AT 5:26 PM

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