I used to have an 87 190D 2.5 with a manual conversion.

Same thing, drone around 1700-1800 rpm, did it in 3rd and 4th.


I tried everything, even added the special harmonic damper at the front flex disk. Also did the engine and tranny mounts, even swapped out the exhaust, and differential. Nothing I changed made any difference.

Selling the car made a difference......

Jim

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