Re: Re. E28 M535 Automatic Transmission

[Henri Baccouche <henrib@xxxxxxxxxxxx>]

It impossible to speculate what the actual problem could be without taking
transmission fluid  pressure data.......and on a 16 year old  unit, time is as
corrosive
as mileage.

Henri


Scott.Reedy@domain.elided wrote:

> Dany,
> This sounds to me like your torque converter is locking and unlocking.
> Modern torque converters have a clutch that locks the transmission and
> the engine togethere at a certain RPM. It sounds as if this clutch is
> wearing out or that 3500 rpm is the lock up RPM for it. This might be
> something to check. I'm guessing that your transmission is set to shift
> out of 1st gear before it gets to 3500 RPM, and that is probably why it
> feels weird when you leave it in that gear.
> Does it do this when you leave the transmission in Drive?
>
> Scott
>
> <snip>
> From: "Dany" <daw@domain.elided>
> Subject: E28 M535 Automatic Transmission
>
> Hi,
>
> I have a problem with the transmission. When I put the shifter on 1st gear,
> everytime when I cruise around 3500 rpm or more and be at a stable speed,
> the
> second gear is engaged for one or two seconds and then comes back first
> repeately, but if I accelerate, it doesn't do it. It only occurs when I
> release the accelerator to be at a stable position and a stable speed.
> <snip>
>
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