Bad cat converter?
#1
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Location: Fauquier County, Virginia
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Year: 1991
Model: Cherokee
Engine: I-6 4.0 HO
Bad cat converter?
My '91 XJ has been diagnosed with the dreaded 'cracked header'. Lately, my XJ makes some rather nasty smell.. I just passed it off as the leaking header. I have gotten no engine codes or anything, just that smell. Would a cracked header cause a sour smell?
#2
Not being able to smell it myself I couldnt tell you. But if the crack is large enough, and it hass a good route into the cab you could be smelling unburnt fuel or just regular untreated exhaust fumes. However I have a crack in the collector of my 97 and I cant smell anything.
#3
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Year: 1994
Model: Cherokee
Engine: 4.0
sour smell is more than likely the cat. I would just cut it off, hollow it out and throw it back under there, or buy a high flow cat.
#5
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Year: 1995
Model: Grand Cherokee
Engine: 4.0 with all of the noise and clatter
I think there may have been a recall and cat converter replacement for that year XJ. Does it smell like rotten eggs?
#6
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Year: 1991
Model: Cherokee
Engine: I-6 4.0 HO
I dont smell it in the cabin except when my windows are down. And when I park, turn off the key and get out, I smell it. Plus, when its stationary and running, the exhaust smells kinda like rotten eggs when some unburned gas on them. Not truly excrutiating, but it's there.
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