My car keeps running hot I've changed the thermostat but it's still running hot no pressure is coming out of the pressure relief valve

Asked by Sep 04, 2015 at 12:38 PM about the 2004 Pontiac Grand Prix GTP

Question type: Maintenance & Repair

I have a 04 potiac

5 Answers

108,005

Check to see if the fan is coming on when it should, look at the fan sensor. Also you may want to flush the entie system with a flushing agent, some of the passes may be plugged in the radiator, clean the outside fins of the radiator with a good cleaning solvent. It may be plugged with leaves and bugs. Also change you radiator cap. Make sure you radiator tank is filled to the proper level.

Best Answer Mark helpful

The car do sent even wanna go pass 4RPM WHEN I TAPPON THE GUESS I WENT TO auto zone and braught PEAK RADIATOR SUPER CLEAN+flush

The fan is coming on when it's supposed to

108,005

Ok great... make sure you bleed the system after you clean it, here is a you tube on how to bleed a system. (try and save as much of the antifreeze if its new ) the I also attached a video on how to flush a system..https://www.youtube.com/watch?v=TlNJDy_bZDE

4,175

Sounds like the coolant level is low. Are you sure it was full to begin with and that its full now? That's the most common cause of overheating in these cars.

Your Answer

Grand Prix

Looking for a Used Grand Prix in your area?

CarGurus has 2,751 nationwide Grand Prix listings starting at $1,200.

ZIP:

Pontiac Grand Prix Experts

  • #1
    Js08016
    Reputation
    4,370
  • #2
    Tom Demyan
    Reputation
    2,970
  • #3
    munron
    Reputation
    2,350
View All

Related Models For Sale

Used Chevrolet Impala
572 Great Deals out of 34,619 listings starting at $1,000
Used Pontiac Bonneville
524 listings starting at $1,799
Used Chevrolet Monte Carlo
12 Great Deals out of 1,347 listings starting at $995
Used Ford Mustang
741 Great Deals out of 42,668 listings starting at $1,300
Used Pontiac Grand Am
1,085 listings starting at $1,599
Used Pontiac G6
80 Great Deals out of 3,911 listings starting at $1,500
Used Pontiac GTO
12 Great Deals out of 465 listings starting at $5,995
Used Chevrolet Malibu
1,242 Great Deals out of 77,953 listings starting at $1,500
Used Chrysler 300
375 Great Deals out of 16,713 listings starting at $1,000
Used Honda Accord
997 Great Deals out of 62,552 listings starting at $999

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.