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1999 GT Grand Prix

Tiny
GRANDPRIXGUY
  • MEMBER
  • 1999 PONTIAC GRAND PRIX
3800 series II motor. Here is the problem. Notice some white smoke coming from both mufflers. I drove about 5 miles down road the Service Engine light came on and my car started to miss bad and now barely runs?

My Anti freeze is low and there are no leaks under the car?

Car has 84000 miles on it. What do you think this is? Head Gaskets? Or Exhaust manifold gasket? How do you determine what the problem is? I have no Anti-Freeze in the Oil at all. How much to repair?
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Saturday, September 29th, 2007 AT 8:19 PM

1 Reply

Tiny
DENNYP
  • MECHANIC
  • 1,823 POSTS
You probably have an internal coolant leak at the intake plennum. The plennum is probably melted where the EGR tube goes into it. Doorman products makes an inexpensive replacement manifold.
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Tuesday, October 2nd, 2007 AT 7:17 PM

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