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2000 Pontiac Grand Prix hot exhaust

Tiny
BUDCREW
  • MEMBER
  • 2000 PONTIAC GRAND PRIX
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 77,500 MILES
I change the cat converter. The exhaust glows red hot.
Sunday, August 31st, 2008 AT 2:56 PM

7 Replies

Tiny
BLACKOP555
  • MECHANIC
  • 10,371 POSTS
Sounds like the vehicle is running very rich. Take a look into that first
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Sunday, August 31st, 2008 AT 5:44 PM
Tiny
BUDCREW
  • MEMBER
  • 4 POSTS
Any ideas where to start?
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Monday, September 1st, 2008 AT 1:56 PM
Tiny
BLACKOP555
  • MECHANIC
  • 10,371 POSTS
First where she glowing red hot?

When did this happen?

Does it do it at idle or only after driving the car fast.
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Monday, September 1st, 2008 AT 3:34 PM
Tiny
BUDCREW
  • MEMBER
  • 4 POSTS
The wife drove to the bank. She said the floor of the car was hot. The old converter was glowing behind the converter. The new one glows converter back. Car has a miss now
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Monday, September 1st, 2008 AT 5:05 PM
Tiny
BLACKOP555
  • MECHANIC
  • 10,371 POSTS
Sounds like a lean issue, tell you what. Take the vehicle to autozone and have the codes scanned and post them back here. See if somethings happenin.
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Monday, September 1st, 2008 AT 5:48 PM
Tiny
BUDCREW
  • MEMBER
  • 4 POSTS
The code po102
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Monday, September 1st, 2008 AT 5:59 PM
Tiny
BLACKOP555
  • MECHANIC
  • 10,371 POSTS
Mass Air Flow (MAF) Circuit Low Input is what it means.

And that can cause your problem.

Try disconnecting and removing it then cleaning the sensors off on it with some qd contact cleaner. Then hook it up again and see how it goes.

Check the harness for damage also.
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Monday, September 1st, 2008 AT 6:39 PM

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