Re. E28 M535 Automatic Transmission

[Scott.Reedy@xxxxxxxxxxxxxxxx]

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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