2005 Pontiac Grand Prix Car problems

AJMILLER06

MEMBER
2005 PONTIAC GRAND PRIX
V6
FWD
104,000 MILES

Heat wasn't working well and checked the antifreeze first, noticing it was low added some. Within a few seconds I hear the antifreeze leaking out the front right of my car with a nice puddle. My car has been running smoothly otherwise.

Friday, February 6th, 2015 AT 3:22 PM

3 Replies

CARADIODOC

MECHANIC
33,873 POSTS

You have to find more specifically exactly where the coolant is leaking from. Start by looking for a small 4"-long rubber hose with a 90 degree bend hanging down from the passenger side of the firewall, under the hood. If coolant is dripping from that hose, the heater core is leaking. You might have to crawl underneath to see that hose. If you have to raise the car up, be sure to support it solidly on jack stands before you go under it.

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Friday, February 6th, 2015 AT 7:31 PM

AJMILLER06

MEMBER
2 POSTS

Brought car in to get check did coolant pressure check found no leak but still don't understand a few seconds after I put coolant in why I heard fluid come out from front right of car and had large puddle.

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Tuesday, February 10th, 2015 AT 7:14 PM

CARADIODOC

MECHANIC
33,873 POSTS

You had a large puddle but found no leak?

This is typical of a leaking heater core, especially if you still have that miserable red Dex-Cool antifreeze and it hasn't been changed often enough. Acids form in it that corrode heater cores and radiators.

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Tuesday, February 10th, 2015 AT 7:25 PM