where am I speaking coolant


Asked by Mar 07, 2016 at 07:06 PM about the 1999 Pontiac Grand Prix 4 Dr GT Sedan

Question type: Maintenance & Repair

I have a 99 Pontiac Grand Prix 3.8L. And the car
has a white smoke/steam coming from the engine
behind the exhaust manifold. I know its spraying
onto the exhaust. It starts as soon as I turn the car
on. The temperature gauge reads normal. I don't
know where to start looking for the leak.

6 Answers


Check the heater hoses, the ones that run to the firewall and your heater core.


First off do not drive the car until it is fixed. Next you should be able to see where it is wet. Probably a heater hose or a bypass hose. Just have to look.


pressurize the coolant jacket with the pressure tester and watch where is it spraying from~!


tester is about 90 bucks http://www.harborfreight.com/radiator- pressure-tester-kit-69258.html

1 of 1 people found this helpful.

It's not of the hoses and I have been looking for the spray for three days. I have been told its a possible head gasket, cracked head, or a freeze plug.

1 of 1 people found this helpful.

most auto parts stores will send a guy out with the tester and see where your leak is~ pumpin' it up to 17 PSI and lordy how your leak will show itself~ that way if you're only using it once save your money... use NAPA or whoever will help you with your leak~

Your Answer

Grand Prix

Looking for a Used Grand Prix in your area?

CarGurus has 2,469 nationwide Grand Prix listings starting at $1,900.


Pontiac Grand Prix Experts

  • #1
  • #2
    Tom Demyan
  • #3
View All

Related Models For Sale

Used Chevrolet Impala
518 Great Deals out of 32,288 listings starting at $1,000
Used Pontiac Bonneville
4 Great Deals out of 407 listings starting at $1,995
Used Chevrolet Monte Carlo
7 Great Deals out of 1,179 listings starting at $1,125
Used Pontiac Grand Am
957 listings
Used Chevrolet Camaro
385 Great Deals out of 31,357 listings starting at $3,495
Used Ford Mustang
337 Great Deals out of 42,078 listings starting at $1,488
Used Chevrolet Malibu
998 Great Deals out of 53,704 listings starting at $1,250
Used Pontiac Firebird
8 Great Deals out of 693 listings starting at $2,850
Used Jeep Grand Cherokee
889 Great Deals out of 71,120 listings starting at $900
Used Nissan Maxima
335 Great Deals out of 20,582 listings starting at $1,175

Used Cars For Sale

2008 Pontiac Grand Prix For Sale
9 Great Deals out of 383 listings starting at $1,900
2007 Pontiac Grand Prix For Sale
333 listings starting at $4,499
2006 Pontiac Grand Prix For Sale
3 Great Deals out of 440 listings starting at $4,000
2005 Pontiac Grand Prix For Sale
325 listings starting at $3,000

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.