Incorrect modulator pressure can also cause the CLUNK when shifting (particularly downshifting). The modulator is on the driver's side front of the transmission, and can be adjusted using a little T handle under a rubber dust cap. This is the thing the vacuum line goes into on the transmission. To really adjust this properly, you need a pressure guage to monitor tranmission fluid pressure through a pressure test port. I'm going from memory here, so don't remember exactly where this port is.
Since transmission stuff is not really covered in the FSM, it can be a challenge to find the info. There used to be a very good write-up on this on the old mbz.org site. I've probably got it around here somewhere if you need it. Of course, it could just mean your transmission, transmission mount, flex disks, and/or rear end is toast :^( Maybe you should just sell it to Kleb :^) Gary Thompson Georgetown, TX 1995 E320 On 3/12/07, Steve MacSween <[EMAIL PROTECTED]> wrote:
I have the vacuum disconnected on my '82 300sd, and when it's in Drive it gives a LOUD clunk on the 3-2 downshift. If I have the selector in S, however, it glides through the 3-2. Is this anything to worry about? My indy expressed some concern, last time he drove it, saying he has never heard one this loud before... but when I explained that it was ok with the selector lever in the other position, he sort of grunted "Oh, well don't worry about it then." Opinions? TKS
