2002 Pontiac Grand Prix is overheating I have flushed the system and changed the t-stat, once it starts to overheat I can turn on the heater and it will cool down which tells me the t-stat is opening and coolant is flowing properly.... I think. Any suggestions before I tear into the head gaskets?

Asked by Sep 06, 2013 at 05:35 PM about the 2002 Pontiac Grand Prix SE

Question type: Maintenance & Repair

3 Answers

455

Before you start throwing money at the problem , get the cooling system pressure tested, have it done twice, when the engine is cold & then again hot, do a compression test on all cylinders as well, (same approach..cold & then hot)..note the readings, if you have a blown head gasket the cylinder which is bad should be revealed. Consider pulling the rad & send it into a shop to be flow tested & flushed. Seeing as the *heater* core is capable of lowering the engine temp that tells me the rad is not doing it's job properly.

1 of 1 people found this helpful.
71,705

Also check the radiator cooling fans. Do they come on? HTH. -Jim

1,425

Make SURE your radiator is not plugged with dirt ! It s a simple check and you can save a lot of grief by taking it out and washing it out with a hose

Your Answer

Grand Prix

Looking for a Used Grand Prix in your area?

CarGurus has 2,567 nationwide Grand Prix listings starting at $1,750.

ZIP:

Pontiac Grand Prix Experts

  • #1
    Js08016
    Reputation
    4,460
  • #2
    Tom Demyan
    Reputation
    3,070
  • #3
    munron
    Reputation
    2,490
View All

Related Models For Sale

Used Chevrolet Impala
546 Great Deals out of 34,764 listings starting at $990
Used Pontiac Bonneville
470 listings starting at $3,999
Used Chevrolet Monte Carlo
9 Great Deals out of 1,229 listings starting at $1,488
Used Chevrolet Camaro
462 Great Deals out of 31,234 listings starting at $1,450
Used Pontiac Grand Am
1,029 listings
Used Ford Mustang
553 Great Deals out of 36,666 listings starting at $2,595
Used Chevrolet Malibu
1,043 Great Deals out of 62,696 listings starting at $880
Used Pontiac Firebird
9 Great Deals out of 768 listings starting at $2,500
Used Nissan Maxima
302 Great Deals out of 22,146 listings starting at $1,200

Used Cars For Sale

2008 Pontiac Grand Prix For Sale
7 Great Deals out of 391 listings starting at $1,750
2007 Pontiac Grand Prix For Sale
368 listings starting at $2,295
2006 Pontiac Grand Prix For Sale
420 listings starting at $4,850
2005 Pontiac Grand Prix For Sale
336 listings starting at $4,500

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.