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

82,955

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

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

82,955

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

3,495

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

Add photo

Related Questions

Grand Prix

Looking for a Used Grand Prix in your area?

CarGurus has 3,715 nationwide Grand Prix listings starting at $1,995.

ZIP:

Search Pontiac Grand Prix Questions

Pontiac Grand Prix Experts

#1 Js08016
Js08016
Reputation 3,770
#2 Tom Demyan
Tom Demyan
Reputation 2,510
#3 munron
munron
Reputation 2,010
View All

Related Models For Sale

Used Chevrolet Impala
919 Great Deals out of 36,145 listings starting at $1,800
Used Pontiac Bonneville
664 listings starting at $2,298
Used Pontiac G6
132 Great Deals out of 4,912 listings starting at $999
Used Chevrolet Monte Carlo
24 Great Deals out of 1,730 listings starting at $1,695
Used Pontiac Grand Am
1,708 listings starting at $1,995
Used Chevrolet Malibu
1,094 Great Deals out of 78,490 listings starting at $2,495
Used Pontiac GTO
6 Great Deals out of 491 listings starting at $5,900
Used Chrysler 300
516 Great Deals out of 20,636 listings starting at $1,500
Used Ford Mustang
682 Great Deals out of 38,187 listings starting at $1,750
Used Nissan Maxima
402 Great Deals out of 25,046 listings starting at $1,500
Used Jeep Grand Cherokee
1,120 Great Deals out of 69,006 listings starting at $1,500