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1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 01-06-2010, 06:14 PM   #1
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I have a problem with my bonneville, the catayltic converter was glowing red hot last night and the car has been missing, Is the converter probably bad????
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Old 01-06-2010, 06:25 PM   #2
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Sounds like a shot, what year is your car? ZZ performance has a after market cat for about $70
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Old 01-06-2010, 08:03 PM   #3
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Is it throwing a check engine light?
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Old 01-06-2010, 08:41 PM   #4
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Be wary of the ZZP converter. Meaning check the inlet/outlet size. They tend to specialize in W bodies and you'll want to ensure it'* the proper one. $70 is a good deal though. I've found a couple magnaflow'* (Pre 2000 model year only cars) on ebay for about $70 shipped. If your car is 2000 or newer, we'll need to find the name of the converter that will work up to the spec your pcm requires. It'* posted ...I happen to forget the name though.
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Old 01-06-2010, 08:44 PM   #5
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i had that problem, it was one of my cylindes had no spark
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Old 01-06-2010, 11:13 PM   #6
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If you are dumping raw fuel through the exhaust, you're cat will glow red. I would check on the misfire condition first, then replace the cat.
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Old 01-06-2010, 11:17 PM   #7
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Hmm glowing red cat. Sounds like a bad Wicca trip
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Old 01-07-2010, 12:40 AM   #8
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Quote:
Originally Posted by Nighthwk12 View Post
Hmm glowing red cat. Sounds like a bad Wicca trip
Nice....I got it! Let'* see if anyone else does.
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Old 01-07-2010, 02:01 AM   #9
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Quote:
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Nice....I got it! Let'* see if anyone else does.
Yeah, I got it lol. But realistically sounds like he'* running seriously rich or lack of spark in one or more cylinders.
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Old 01-07-2010, 09:00 AM   #10
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This does kinda sond like a converter problem... But i would not sasy its whats causing your misfire. Like the others said my guess would be the misfire lead to the converter. I would get this looked at. If the converter infact is "melting" from being too hot by misfire you would notice alot of backpressure and sluggish driving. It does take alot to melt a catalyt though.... Its meant to be hot in there not only does it get the heat of exahust but it does infact get warmer as the redox reactions take place. (i work for a company who coats the cataylst ). I wold look at a high flow cat anyways
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