Smelly cat.

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, Olds 98 91-96, Buick Lesabres and Park Avenue 91-96. Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.
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Blownville
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Smelly cat.

Post by Blownville »

I have that sulfur smell coming from my Magnaflow everytime I get on it since I put it on about a year ago. Does this mean that something is not running right or is it normal? I read a poster in the shop that did the work and it said that the cat should never fail, and only will fail due to the engine not running right. Is this bogus or true?
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2003 SLE 145K PLIM, Tune, FWI, 180stat, Magnaflow cat and mufflers
1968 Galaxie Country Sedan Wagon 390/C6/2.75
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skregal
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Re: Smelly cat.

Post by skregal »

smelly, smelly cat.
what are they feeding you?
smelly, smelly cat.
its not your fault.

- Phoebe Buffay
Black 95 SSEi (original owner) 238K miles
Black 05 GXP (some idiot put the first 12K on it)186K miles
Black 04 Tahoe (original owner)310K miles
Black 16 Traverse (original owner)90K miles
Black 15 Lacrosse (some nice lady put first 15K on it)43K miles
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thunderhand
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Re: Smelly cat.

Post by thunderhand »

I occassionaly get that smell too.. only when i hammer it..
which is not often,,

not sure what it is ....
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Re: Smelly cat.

Post by Guest »

Blownville wrote:I have that sulfur smell coming from my Magnaflow everytime I get on it since I put it on about a year ago. Does this mean that something is not running right or is it normal? I read a poster in the shop that did the work and it said that the cat should never fail, and only will fail due to the engine not running right. Is this bogus or true?
keep in on track guys


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Re: Smelly cat.

Post by Guest »

thunderhand wrote:I occassionaly get that smell too.. only when i hammer it..
which is not often,,

not sure what it is ....
I have the same problem

Although I was told that high-flow cats will never scrub the gases as well as an OEM cat
Last edited by Guest on Fri Oct 31, 2008 8:28 am, edited 1 time in total.
Barry
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Re: Smelly cat.

Post by Barry »

Add me to the list. Didn't know what it was until I read this post. I thought it might be coming from the engine bay. It seems odd that the smell from under the car would get inside the passenger compartment when the vehicle is moving at speed.
1999 SSE. 112k, Cleared Corners, Mobile 1, Energy Suspension endlinks. Ported and Polished LIM, NGK TR-55 Sparkplugs, 180 drilled Intense stat, Flow matched injectors, Intense FWI, Intense PCM, MagnaFlow Cat.
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bobfather99
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Re: Smelly cat.

Post by bobfather99 »

I had that smell off and on when I bought my car in 2001.

Still get it once in a blue moon, never figured out why...
However it passes Indiana emissions, so I dont worry about it...
1995 White Bonneville SE

188340 Miles as of 06/07/10, still running.........

LIM/UIM Work done 4/23/07 at 145000 miles...
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