My son's 2004 GP gt, has new thermostate but still goes to max overheat then right back down to normal temp on reg basis, does not lose antifreeze. any ideas???? Was told NOT to flush

Asked by Oct 31, 2014 at 12:33 AM about the 2004 Pontiac Grand Am GT

Question type: Maintenance & Repair

Used car dealer had to fix transmission it was slipping bad... but didn't say exactly what was done. Temp shoots up to max overheat then goes right back down to normal.  Replaced thermostat. It does this all the time, but it does not smell burnt or like antifreeze and it is not using antifreeze. Seems like fan is fine...no dampness in interior....Don't have a clue what it could be. Was told NOT to flush radiator. Any help and ideas are greatly appreciated!!!!!
Thanks in advance

2 Answers

36,455

First thought. There's air in the system. Second thought. The temperature sending unit is bad.

1 of 1 people found this helpful.
36,455

To bleed the air out of the radiator, go to YouTube and watch a video on how to get it done. The more I think about it the more I'm convinced that you have air in the system.

1 of 1 people found this helpful.
Best Answer Mark helpful

Your Answer

Pontiac Grand Am Experts

  • #1
    tenspeed
    Reputation
    7,980
  • #2
    John Saffrahn
    Reputation
    1,630
  • #3
    Tom Demyan
    Reputation
    1,590
View All

Related Models For Sale

Used Pontiac Grand Prix
12 Great Deals out of 2,483 listings starting at $950
Used Ford Mustang
413 Great Deals out of 41,516 listings starting at $1,488
Used Chevrolet Impala
543 Great Deals out of 33,345 listings starting at $1,499
Used Pontiac G6
36 Great Deals out of 3,862 listings starting at $1,700
Used Nissan Maxima
340 Great Deals out of 20,643 listings starting at $1,175
Used Honda Accord
897 Great Deals out of 77,394 listings starting at $1,100
Used Toyota Camry
1,080 Great Deals out of 76,444 listings starting at $1,500
Used Pontiac GTO
7 Great Deals out of 422 listings starting at $4,995
Used Jeep Liberty
196 Great Deals out of 6,926 listings starting at $995
Used Pontiac Bonneville
441 listings starting at $1,500

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.