• Tiny
  • socomsting
  • 1985 Pontiac Firebird

Engine Cooling problem
1985 Pontiac Firebird V8 Two Wheel Drive Manual 30 miles

I have a new radiator and thermostat but the engine continues to try n overheat. Could this possible be cause by a bad radiator cap?I would really like to find out the problem as I have recently put a new engine in the car as well as the rest of the parts being new.

Do you
have the same problem?
Wednesday, March 12th, 2008 AT 11:10 PM

1 Reply

  • Tiny
  • rasmataz
  • Member

Did you bleed the cooling system? If so see below

Have it block and pressure tested-do the block first to pinpoint a combustion leaking into the cooling system or a gas analyzer to sniff for hydrocarbons at the radiator fill neck.

Pressure test: do not do a pressure test if there's leakage at the headgasket this might cause coolant into the cylinders and lock it up or bend a connecting rod if cranked thereafter. The headgasket should be repaired before doing the pressure test.

If the block and pressure test passes check the following: Thermostat, Pressure test the Rad. Cap, Clogged radiator, Fan clutch, Radiator electrical fan, collaspe hoses, water pump.

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Sunday, March 16th, 2008 AT 12:12 AM

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