When driving the car , she roars a bit until I get her up to 25 mph/3000rpm. Then she is quiet and shifts fine (auto tranny) Any suggestions.thanks

Does it just do this when you first start the car and it has not been warmed up??? Does it do it every time you slow down and the car downshifts????How long since the transmission has been serviced. If recent what fluid are you using???...Jim

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James A. Harris

The car drags each time after a stop(downshift). The transmission was rebuilt in 2002 I am not sure of the fluid they used.

The only thing I would recommend is to change the filter and drain oil from the torque converter. I would use mobil 1 transmission fluid and a quart of trans X. It sounds like your transmission has some of the small passageways almost plugged up. I don't think it is a vacuum problem...goodluck Jim

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James A. Harris

If you have excessive gear noise (whine), the tranny is still bad, it needed more work than it got on the rebuild. Fairly typical -- MB trannies usually go until they have considerably more wear than US type trannies, and if it just got frictions/steels and new seals, as is the usual "US" tranny rebuild, it wasn't done right.

Otherwise, if this is a new occurance, you have something else wrong.

Check the tranny mount and driveshaft center bearing and carrier first, though -- a bad tranny mount and/or center carrier will allow the driveshaft to "orbit" rather than spin on axis, and this will be at LEAST a roar -- it will eventually sound like someone pounding on the floor pan! A bad flex disk (front or rear) will do the same, will also cause bangs on downshifts.

Peter

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1972 220D ?? miles
1988 300E 200,012
1987 300D Turbo killed 9/25/07, 275,000 miles
1985 Volvo 740 GLE Turobodiesel 218,000
1972 280 SE 4.5 165, 000 - It runs!