I think the thumping is a torn diaphragm...

so you only have to replace 4 then, correct.

if it's not too much trouble could you post the mb part numbers. I have already ordered two piece and have them on the bench in my garage.

I try to budget only about 60 dollars a month for repairs and supplies...so it takes some time to get everything.... plus I keep up two w124's.

Without this forum, I might be driving Honda's

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1989 300ce 129k
( facelifted front,updated tail lights, lowered suspension,bilstein sports, lorinser front spoiler, MOMO steering wheel, remus exhaust,stainless steel brake lines). (Gone)

1997 s320 154k (what a ride). Sold with 179k miles. Replaced with Hyundai Equus

1994 e320 Cabriolet 108k



1972 280se 4.5 153k Owned for 12 yrs, sorry I sold it


[/SIGPIC]