Why does my 06 Grand Prix keep overheating?

Asked by Kayla Jun 01, 2020 at 11:50 AM about the 2006 Pontiac Grand Prix Base

Question type: Maintenance & Repair

Hi my 06 Grand Prix was over heating so I
flushed it changed the thermostat an then put
some head gasket sealer in with water my
grandpa said leave it in there for a few days
we’ll I didn’t get around to it so it was in there
for two weeks an now my car overheats right
away so did the gaskets seal possibly mess
up the thermostat an what should I do? Any
input appreciated

3 Answers

18,185

No, if you used a sealant that's designed for cooling systems like Bars Leak or something similar, it is totally compatible with all the cooling components and won't plug anything up like the nay sayers like to say it will. You've probably got a bunch of air trapped in the system from the draining and refilling. Did you use the bleeder valve near the thermostat to bleed off excess air? Even then its sometimes a problem. You may need to drain and refill the system again. Try doing it with the car facing uphill. This sometimes helps the air find its way to the top instead of staying trapped deeper down i the engine.

1 people found this helpful.

O ok thank you so much for the help is that why it makes that bubbling sound when I turn it on an start driving an also why did it all of a sudden just overheat when I changed the thermostat an flushed it a month ago is there anything else u would suggest doing if this doesn’t work

18,185

Did draining and refilling and bleeding off the air solve the problem? If not, its time to have the system pressure tested and possibly do a compression test on the engine to determine if there's a failed gasket somewhere that is allowing the engine to force air into the cooling system.

Your Answer:

Grand Prix

Looking for a Used Grand Prix in your area?

CarGurus has 178 nationwide Grand Prix listings starting at $1,895.

ZIP:

Own this car?

Share your experience with others.

2006 Pontiac Grand Prix

Review another car

CarGurus Experts

  • #1
    munron
    Reputation
    8,110
  • #2
    james sparrow
    Reputation
    7,450
  • #3
    Dorian Hendricks
    Reputation
    5,980
View All

Know more, shop wisely

Search

Related Models For Sale

Used Pontiac Bonneville
48 listings starting at $4,950
Used Pontiac Grand Am
80 listings starting at $2,488
Used Pontiac GTO
11 Great Deals out of 206 listings starting at $9,995
Used Ford Mustang
964 Great Deals out of 24,837 listings starting at $1,900
Used Chrysler 300
327 Great Deals out of 8,579 listings starting at $2,950
Used Chevrolet Monte Carlo
7 Great Deals out of 223 listings starting at $4,995
Used Pontiac G6
16 Great Deals out of 373 listings starting at $2,300
Used Chevrolet Impala
265 Great Deals out of 4,332 listings starting at $1,900
Used Dodge Charger
743 Great Deals out of 39,455 listings starting at $1,295
Used Chevrolet Corvette
680 Great Deals out of 11,694 listings starting at $4,999
Used Nissan Altima
1,204 Great Deals out of 34,624 listings starting at $1,400
Used Chevrolet Malibu
846 Great Deals out of 20,619 listings starting at $1,995

Used Cars For Sale

2008 Pontiac Grand Prix Base For Sale
29 listings starting at $1,895
2006 Pontiac Grand Prix Base For Sale
25 listings starting at $2,299

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. Content will be removed if CarGurus becomes aware that it violates our policies.