Hello,

I have a '83 240D that I am about ready to sell. It's having a problem shifting down while going uphills or when the gas pedal is to the floor or almost to the floor and I am trying to accelerate fast. When I go uphills, or attempt to accelerate fast (not really "fast" when talking about a 240D), the car will upshift at certain speeds no matter how big the hill or how far the accelerator pedal is pushed down and it upshifts too quickly, so I have to manually shift to a lower gear. The car also continues to run for about two to three seconds after the ignition is off and the power door locks are hesitant to unlock after I unlock the driver's door lock. I was told that there are three vacuum controls, the ignition, the transmission, and the door locks. Is there any way I could find out what the problem is without spending $80/hour or higher for a mechanic to look at it? Thanks for the help.