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2004 Pontiac Grand Am coolant leak

Tiny
DOWN7575
  • MEMBER
  • 2004 PONTIAC GRAND AM
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 69,000 MILES
I have a coolant leak. The car only leaks when it cools off. Usually over night. I can't see anything wet under the hood. I changed the radiator cap and that didnt do anything. I really don't want to start changing other things out, and I really can afford to take it in. Any ideas would be great. I dont see any grease or dirt in the coolant, even before I added more. I can't see it leaking from the water pump, and the hoses are dry. I'm really at a loss right now.
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Saturday, September 5th, 2009 AT 6:37 PM

4 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,192 POSTS
What section of the engine compartment is the coolant laying under? Also, have you checked the oil to make sure it's not leaking into the it? Finally, if you have the 3.1L V6, make sure the intake gasket isn't leaking. THat was a common problem on that engine.

Let me know what you find.
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Wednesday, July 29th, 2020 AT 10:07 AM
Tiny
ALLGOODR
  • MEMBER
  • 2 POSTS
Drain all the coolent out and put a air nozel in the cap hole blow air threw and youll see bubbles or air whisle comming from leak I do this in my derby cars all the time it works good
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Wednesday, July 29th, 2020 AT 10:07 AM
Tiny
DOWN7575
  • MEMBER
  • 2 POSTS
Well, it is the 3.4l v6. It isnt leaking into the oil. The coolant is under the passenger side front tire. Right in front of the tire on the ground. I'm still looking for signs of leakage.
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Wednesday, July 29th, 2020 AT 10:07 AM
Tiny
EDPETERS28
  • MEMBER
  • 1 POST
I have the exact same problem. Thought I blew a head gasket due to a bit of white smoke out of the back so I changed that out. Now my grand am is still running hot, its cold as hell outside so its not quite goin much above the halfway mark on the dash but its still leaking from somewhere on the passenger side. At least after changing the gaskets its running great otherwise lol.
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Wednesday, July 29th, 2020 AT 10:07 AM

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