I checked the vacuum and the rear flex disc... everything is fine. I still think it`s the rear differential going totally bad. My next question is will a differential from a 1987 300E fit my 1987 300TD?? I have an extra diff from the 300E (my parts car) and would certainly love to use it. Thanks everyone!!

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1984 MB 300D Turbo Diesel W123 Sedan 132K
1987 MB 300D Turbo W124 Sedan 295K
1983 Porsche 944 104K
1989 Audi 80 Quattro 180K
2002 Audi A6 3.0 Quattro Avant 49K (Wife's car with warranty )

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