1997 Mustang Burning smell, black sludge on pass. side cat. and y-pipe - Ford Mustang Forum
 
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post #1 of 3 (permalink) Old 01-02-2011 Thread Starter
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1997 Mustang Burning smell, black sludge on pass. side cat. and y-pipe

It's a black, sludgy mess burning on the bottom of my passenger side cat and y-pipe. There isn't a lot of it. It is very smokey and sticky.



I've gone about 500 miles a day for three days now, still have two days of 500 miles left.

I'm riding it at 60 MPH in third gear(automatic trans.), about 2200 RPMs. I'm within 400 lbs of the gross weight limit. 300K miles on everything but the engine(~120K). Most of the brake and power steering systems are brand new. And, yes: I installed everything properly.

I've narrowed it down to: transmission fluid, engine oil, or something I picked up on the way into the hotel tonight. I didn't smell it until I pulled into the parking space this evening and sat for about 10 seconds. I've made about a dozen stops today, most of which were only several minutes to an hour before I noticed the smell.

My transmission fluid is bright pink, my oil is amber. Nothing appears to be dripping onto the ground while the vehicle is idling.


1995 5.0L GT, T-5, Black, 'vert.
1996 4.6L GT, T-45, Laser Red, 'vert.
1997 3.8L V6, 4R70W, Laser Red, coupé.
1997 3.8L V6, T-5, Black, coupé w/ sunroof.
1997 4.6L Cobra, T-45, Black, coupé.
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post #2 of 3 (permalink) Old 01-02-2011
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Do you remember running over any plastic bags or trash on the road? If theres no signs of drips coming from above the messy area, I'd say you caught a bag and its just burning itself up on the hot cats.

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post #3 of 3 (permalink) Old 01-03-2011 Thread Starter
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Quote:
Originally Posted by trashpickinman View Post
Do you remember running over any plastic bags or trash on the road? If theres no signs of drips coming from above the messy area, I'd say you caught a bag and its just burning itself up on the hot cats.
Also very possible. I'm in a part of the states where they wait for dust storms to do garbage pick-up.

Thanks! You're quite aptly named, by the way.

1995 5.0L GT, T-5, Black, 'vert.
1996 4.6L GT, T-45, Laser Red, 'vert.
1997 3.8L V6, 4R70W, Laser Red, coupé.
1997 3.8L V6, T-5, Black, coupé w/ sunroof.
1997 4.6L Cobra, T-45, Black, coupé.
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