[kamran49]

I have a w126, 280se 1982 euro, it is idling at 800 rpm when hot and around 1200 when starts cold, i have a heavy kick when using reverse gear even in hot engine . Also the gear 4 kicks-down to 3 even with mild acceleration pedal touch.
I think it should be some adjustment problem. Do some one can help me?

 

[ianrandom]

It's a bit difficult on one of these because they aren't very common in the forum.
I don't know about the heavy reverse engagement but the eager change down could mean the Bowden cable needs adjustment. You can search for that on here - it does change the shifting but as far as I know it doesn't affect reverse.

Another adjustment point is the vacuum modulator. Are your forward gear changes very harsh, or normal?

 

[kamran49]

Hi
The forward shifts are rather smooth .
Can you help me about adjustment of vacuum pod?

 

[Teutone]

Welcome to the forum Kamran.
This should help to search topics Mercedes-Benz Forum - Announcements in Forum : W126 S,SE,SEC,SEL,SD,SDL Class

P.S. I used to live in Mirdamad / Naft.