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

18,685

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

18,685

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 2 nationwide Grand Prix listings and the tools to find you a great deal.

Postal Code:

CarGurus Experts

  • #1
    munron
    Reputation
    8,220
  • #2
    James Sparrow
    Reputation
    7,520
  • #3
    Dorian Hendricks
    Reputation
    6,170
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Pontiac GTO
5 listings
Used Chevrolet Corvette
29 Great Deals out of 1,060 listings starting at $15,871
Used Chevrolet Impala
9 Great Deals out of 107 listings starting at $4,632
Used Ford Mustang
65 Great Deals out of 1,259 listings starting at $4,995
Used Dodge Charger
38 Great Deals out of 645 listings starting at $4,888
Used Chevrolet Monte Carlo
7 listings starting at $3,000
Used Pontiac G6
21 listings
Used Chrysler 300
34 Great Deals out of 516 listings starting at $4,999
Used Cadillac CTS-V
1 listings starting at $38,388
Used Chevrolet Tahoe
24 Great Deals out of 911 listings starting at $11,900

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.