Marbles in my muffler

[minoclan]

I spent Friday at Pocono with he Audi Club. Other than the bad gas cap spewing gas all over the North Course, it was a pretty good day.

I packed up and left about 4:30. When I was leaving on the access road to the tunnel there was a huge noise coming from the rear of the car like there were about 5 marbles in the muffler. (It also sounded like I was dragging tin cans). It started when I decelerated from about 25mph.

I stopped the car checked everything. It was not coming from the engine. I pulled away and when I decelerted it did it again. I stopped. Then it was fine . I drove home (about 60 miles) with no problem and no noise. It did it once again decelerating right before my driveway. Nothing since.

Any ideas?

[ivangene]

which car?

maybe a bad cat converter, marbles in a can is often how an IMS failure is described, but I dont think you would make it 60 miles without that

[tobluforu]

If you have a cat and the internals let loose, bang on it and you should hear the crap that has melted and fallen apart inside it.

[jdbunda]

Don't want to alarm you, but I had a similar thing with a 993 a few years back - it was a shattered ceramic valve seat. You might need to take the muffler off and see if you can figure out what the stuff is and where it came from.

[ClickClickBoom]

CVs gone dry........

[minoclan]

Sorry. It was my 70 with a 3.2 motor and a 915 trans.

[ivangene]

OK.. well its not the cats then

CV's is a good guess