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

35,405

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

1 of 1 people found this helpful.
35,405

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
    7,790
  • #2
    John Saffrahn
    Reputation
    1,610
  • #3
    Tom Demyan
    Reputation
    1,520
View All

Related Models For Sale

Used Pontiac Grand Prix
29 Great Deals out of 2,738 listings starting at $1,491
Used Pontiac G6
61 Great Deals out of 3,948 listings starting at $1,295
Used Pontiac GTO
13 Great Deals out of 476 listings starting at $5,995
Used Ford Mustang
726 Great Deals out of 38,099 listings starting at $895
Used Pontiac Bonneville
3 Great Deals out of 526 listings starting at $1,799
Used Chevrolet Impala
514 Great Deals out of 34,210 listings starting at $950
Used Chevrolet Malibu
1,086 Great Deals out of 71,437 listings starting at $2,499
Used Pontiac Sunfire
317 listings starting at $2,100
Used Honda Accord
1,114 Great Deals out of 62,341 listings starting at $1,199
Used Honda Civic
796 Great Deals out of 73,922 listings starting at $1,400

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.