Upshift auto transmission 240D
 

My transmission will upshift fine if I don't get on, if I step on it will slip between shifting points. Is there any easy way to correct this?
I purchased this car with a blown engine from a person in New Hampshire. The vehicle is in excellent condition except for cruise control and minor transmission problems.

Thank you for any help you can provide in advance.

1982 240D automatic transmission
1981 240D manual transmission
1977 R100 BMW for speed manual
Joe Comerford
Cambridge, Massachusetts

Upshift auto transmission 240D
 

If I let my car pick up speed gradually the transmission will up shifts smoothly.
If I step on it, it will slip between shift points. Is there any easy fix for this problem? Plus it will not downshift.
Any help on this situation would be greatly appreciated thank you in advance
J Comerford
Cambridge, Massachusetts
1981 240D manual transmission
1982 240D automatic transmission
1977 R100 BMW manual transmission
1974 cub Cadet yard tractor

The 1980 & later 240D's use vacuum controls & have a vacuum modulator.

There are several plastic on/off vacuum switches on the valve cover that can & will affect those shifts..

vacuum controls 240D
 

it was the vacuum control on the injection pump. The control was way out of adjustment. thank you

240D automatic transmission
 

Thank you for the help it was the vacuum Control on the injection pump.
it was way out of adjustment