2004 Grand Prix Overheating

30

Asked by Oct 17, 2016 at 12:14 AM about the 2004 Pontiac Grand Prix GT2

Question type: Maintenance & Repair

My car overheats after replacing the
radiator, thermostat, and PVC heater code
connections. What else could it be?

6 Answers

27,215

Can you confirm you have any kind of flow through the radiator, or that the water pump is cycling coolant? Open the radiator cap (with engine cold) and watch coolant in radiator get sucked down when thermostat opens once engine reaches operating temp. When that happens you should also see coolant flow out of internal radiator tubes. If not, you have a possible bad water pump.

1 of 1 people found this helpful.
30

Water pump was replaced before last winter. I'm bleeding the air from atop the thermostat housing right now.

1 of 1 people found this helpful.
71,025

Sounds like you have air in the cooling system. Is the heater working? If not air is my first suspect. HTH. -Jim

30

There's a lot of air coming out. On the 3rd round of bleeding.

1 of 1 people found this helpful.
30

When should I stop bleeding?

1 of 1 people found this helpful.
71,025

When you get a steady stream of coolant. If possible it's helpful to park the car with the front on an upward angle (nose pointing up) like halfway up the driveway. HTH. -Jim

Your Answer

Grand Prix

Looking for a Used Grand Prix in your area?

CarGurus has 2,640 nationwide Grand Prix listings starting at $1,449.

ZIP:

Pontiac Grand Prix Experts

  • #1
    Js08016
    Reputation
    4,420
  • #2
    Tom Demyan
    Reputation
    3,060
  • #3
    munron
    Reputation
    2,470
View All

Related Models For Sale

Used Chevrolet Impala
535 Great Deals out of 35,073 listings starting at $800
Used Pontiac Bonneville
489 listings starting at $3,699
Used Pontiac G6
66 Great Deals out of 3,888 listings starting at $1,600
Used Pontiac Grand Am
1,087 listings starting at $994
Used Ford Mustang
539 Great Deals out of 35,434 listings starting at $1,200
Used Chevrolet Monte Carlo
4 Great Deals out of 1,290 listings starting at $1,488
Used Pontiac GTO
6 Great Deals out of 487 listings starting at $5,995
Used Chevrolet Malibu
933 Great Deals out of 64,932 listings starting at $1,995
Used Chrysler 300
327 Great Deals out of 17,928 listings starting at $1,295
Used Jeep Grand Cherokee
841 Great Deals out of 69,928 listings starting at $700
Used Nissan Altima
966 Great Deals out of 77,818 listings starting at $1,695

Used Cars For Sale

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.