85 280SL euro transmission hard shifting.

[desert]

My 1985 280SL Euro, 55k on it with auto trans is starting to shift up hard between gears, it's always made you aware that it was shifting but now it can snap you back going from each gear. It does it more when it's cold although right now it's way over 100 degrees here in Arizona but sometimes it still does it when it's really warmed up. First, any ideas why it's shifting so hard ( oil level is fine and oil is clean) and second can you tell me the model number of this transmission that is married to the streight six engine in the 85 Euro 280 SL. Thanks for any advise. Desert

[tecqboy]

possible bad vacuum modulator. Do a search.

[desert]

Thanks for the info. I'm reletively new on this forum so what do you mean by "do a search" and how do I do that?....Desert

[tecqboy]

Go to the very top of this page and press the search tab. Fill in the blank with the term you're looking for.... like : Vacuum modulator.

[desert]

Thanks, that works great and lots of good info there...Desert

[desert]

I've gone through what I think are the applicable search topics and I still can't find out what model transmission is mated to the 110 engine in my 85 280SL Euro. Is it the same as a 85 American model 380SL? I kinda doubt that it is so any info along these lines would be appreciated. Also, any recommendation where to buy a vacuum modulator for this transmission? Thanks, Desert