Question about 2004 Pontiac Grand Prix

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Running entirely too hot....

I replaced the radiator, the thermostat, the water pump and ran new fluid after having it flushed out! I was driving today and he nearly hit the overheating point! What is going on? Anyone else have this problem?

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  • Pontiac Master
  • 14,036 Answers

Sound like need bleed air out of the cooling system.most newer vechicles when make repair on coolant system parts cooling system need to be bled.

Posted on Apr 25, 2013

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6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

LowJulz01
  • 3 Answers

SOURCE: pontiac sunfire overheating

hello! I had the same problem with my 2000 Pontiac Sunfire... there might be one of these 2 problems with it.... maybe the Heater Core is jammed and the coolant dosen't flow thru the engine to cool it off, or the water pump is defective.... does the heating works or not? if yes, the water pump is defect, if not, the heater core is jammed, try a ''radiator hose cleaner'' (sold in Napa's or Carquest..) it will act as a kind of ''decloaker''.. if works, good! 15$ solution... if not, replace Heater Core... ~150$

Posted on Jan 15, 2012

  • 878 Answers

SOURCE: My Grand Prix stared running

are you sure that the radiator is not clog ,also check the cap for broken gasket also check the hoses for stiffness i would also wanna run it without thermostat to see what happens ,some times they come defected from manufacturer good luck

Posted on Mar 30, 2011

Testimonial: "Thanks!! Will check out your suggestions."

danoyachtcap
  • 2899 Answers

SOURCE: My 06 Grand Prix was

Some cars require a thermostat temperature setting according to how it's driven. Check that you have the correct thermostat temperature range.

Good Luck

Posted on Jun 29, 2011

  • 312 Answers

SOURCE: my 2005 pontiac grand prix

Sounds like either the hose isn't attached to the thermostat housing properly, the hose has a split in it at the connection, or the gasket isn't properly installed for the thermostat housing.

Posted on Aug 31, 2010

  • 362 Answers

SOURCE: I HAVE A 97 GRAND AM GT,REPLACED WATER PUMP,

Check and see if cooling fan is operating. Check to see if you have any trace of water in the motor oil. It is probably a head gasket.
Let me know what you find.
Lone99star

Posted on Mar 27, 2009

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