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Fog on rear bumper.

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Old Jan 7, 2012 | 01:24 PM
  #1  
80schild's Avatar
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From: Alabama
Car: 87 GTA
Engine: 5.7 TPI
Transmission: 700r4
Axle/Gears: 3:27 BW 9 bolt
Fog on rear bumper.

I notice when my car is sitting idling, there's a fog/condensation that builds on the rear bumper right above the exhaust tips. It's not extreme to the point of dripping off, but I can see it. Do any of you notice this?

I've never really paid any attention to it before, just curious if it's normal. My other vehicles don't do this, but their tailpipes aren't right next to the bumper either. I just hope it's not a sign of an intake gasket leak, I do have to add coolant every now and then, but there's no white smoke billowing out, and no overheating. No signs of coolant in the oil.
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Old Jan 7, 2012 | 07:09 PM
  #2  
Elthesh's Avatar
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Joined: May 2004
Posts: 418
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From: Fort Lauderdale
Car: 1991 Pontiac Trans Am
Engine: 305
Transmission: 700r4
Re: Fog on rear bumper.

I have this on my 99. It's caused by the cat being removed so the exhaust pipes don't heat up enough causing all sorts of condensation which begins steaming off. It's generally only noticeable when it's colder out. From what I gather, basically the pipes are getting condensation on them and heating up enough to steam it off but not enough to keep the condensation from forming in the first place.
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