1996 Mercedes Benz 320sl vacuum for door

  • 1996 MERCEDES BENZ 320SL

1996 Mercedes Benz 320sl

the vacuum pump for the door does not appear to work for the driver side door. It closes, then rejects, i.E. Opens the door a few seconds after closing it tight.

the other doors work perfectly.

Do you
have the same problem?
Sunday, February 1st, 2009 AT 5:12 PM

1 Reply

  • 681 POSTS

Your vehicle is equipped with a PSE (pnuematic system equipment) pump which has a regulating block which controls all of the vehicles vacuum assist features. This complaint can be caused usually by one of two things. First a vacuum leak. Do you hear anything that sounds like a vacuum leak in the door? A hissing sound when the closing function is operating? If you do you have a broken vacuum line to the closing assist actuater. If you don't here a hiss the valve for this door may be leaking at the PSE pump. This would require replacement of the entire pump as the distribution block for all functions is contained within the pump unit.

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Friday, February 13th, 2009 AT 4:19 PM

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