Why is the coolant pouring out and where is it coming from?


Asked by GuruCGM6V May 03, 2020 at 08:26 AM about the 2004 Pontiac Grand Prix GTP

Question type: Maintenance & Repair

I have a 2004 pontiac grand prix gt it started
overheating changed the water pump went to
fill the coolant back up and the coolant
started pouring out of it under the pulley
system so we changed the elbows did a
water test to see if it was still pouring out
and same problem can't figure out exactly
where it's coming from please help we are
stuck 350 miles away from home and need to
get it fixed.

2 Answers


I'd check the lower radiator hose where it attaches to the engine and the heater hoses. Both are in that area. Double check those elbows too. If the O rings aren't lubricated with at least some coolant before installation they can roll back onto the elbow and not seal. I use WD 40 to lubricate the O rings before installation. Did you make sure you got all the old water pump gasket off? Did you use gasket sealant on the new water pump gasket? Hope that helps! Jim

Your Answer:

Grand Prix

Looking for a Used Grand Prix in your area?

CarGurus has 216 nationwide Grand Prix listings starting at $3,400.


Own this car?

Share your experience with others.

2004 Pontiac Grand Prix

Review another car

CarGurus Experts

  • #1
  • #2
    james sparrow
  • #3
    Dorian Hendricks
View All

Know more, shop wisely


Related Models For Sale

Used Pontiac Bonneville
57 listings starting at $3,000
Used Pontiac Grand Am
75 listings starting at $1,950
Used Chevrolet Impala
344 Great Deals out of 4,534 listings starting at $604
Used Pontiac GTO
7 Great Deals out of 210 listings starting at $9,500
Used Pontiac G6
13 Great Deals out of 349 listings starting at $1,995
Used Chevrolet Monte Carlo
6 Great Deals out of 232 listings starting at $2,500
Used Chevrolet Malibu
1,107 Great Deals out of 19,722 listings starting at $1,100
Used Buick LaCrosse
128 Great Deals out of 1,668 listings starting at $1,800
Used Ford F-150
6,110 Great Deals out of 145,394 listings starting at $900
Used Chevrolet Silverado 1500
4,605 Great Deals out of 127,654 listings starting at $2,490

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.