i had the same problem with my 87 300e. i had many trans shops tell me they would be glad to rip it out and rebuild it. for thier best price of 1800-3200 dollars. ( mercedes sells rebulit trannys for 1000 dollars with a core charge!)
anyway i decided to change the fluid, (not a very good job either, fluid is still dark) anyway, after the fluid change my trans ran like new! i would suggest getting your filter and fluid changed first before going for the rebuild or exchange. it would be a small price to pay if that solves it.
p.s. tell me if it works, if you choose that route.
01 ML55 AMG
92 500E (a few mods)
87 300E (lots of mods)
00 Chevy 3500HD Diesel Box Truck
68 18' Donzi Marine
06 GT i-Drive7 1.0 Mountain Bike (with GPS!
PREVIOUSLY OWNED:83 300SD, 87 420SEL, 88 420SEL, 90 420SEL, 86 560SEL, 86 190E 2.3-16V AMG, 94 E320