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Old 09-18-2003, 03:29 AM   #1
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Default New cat, new smell

I just put in a high flow cat, now sometimes I get that rotten egg smell that is often attributed to a bad convertor. What'* the deal?
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Old 09-18-2003, 10:01 AM   #2
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I had that problem too, usually attributed to a wonky O2 sensor
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Old 09-18-2003, 08:27 PM   #3
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I thought that smell was normal with new catalytic converters. Isn't that why most new cars have that smell untill the converter wears in.
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Old 09-18-2003, 08:36 PM   #4
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I guess that would explain it.
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Old 09-18-2003, 09:17 PM   #5
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Yeah i hope so, that is honestly what i have heard from many people, but to be safe you could try calling up the place where you got it from and ask them if it'* normal. Cause if it'* a high flow cat you probably paid decent coin for it so you don't want it to be faulty. I would say im about 98% sure that it'* because it'* new though.
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Old 09-18-2003, 10:01 PM   #6
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That smell is the new chemicals mixing inside the cat (not completely active). They do not completely filter the exhaust gasses until you have driven the car for quite a while. I believe the break in is close to 1000 miles, but I have heard different opinions.
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Old 09-19-2003, 04:56 PM   #7
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Quote:
I had that problem too, usually attributed to a wonky O2 sensor
Or a new Bosch O2 sensor.
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Old 09-19-2003, 05:11 PM   #8
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You know what dude..it probably was

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Old 09-19-2003, 05:41 PM   #9
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I think Will and some others have tried the Bosch O2 and it smelled bad and wonked out in a month.
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Old 09-19-2003, 06:06 PM   #10
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Ac Delco, put in by myself last fall.
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