Hi,
I've just purchased a 1985 Porsche 928 fitted with the same 4 speed slush box that is fitted to many an MB.
I havent had the car high enough in the air yet, but it really feels like the vacuum pipe to the modulator has been pulled off! The shifts at anything below 2/3 throttle are super hard.
So either the pipe is off.... easy fix, Or the modulator needs tweaking.

I've read on here that it shouldn't just be a hit and miss adjustment, and that it should be to spec. I've looked through the 126 service manual and can't find a thing on adjusting the transmission!
Can anybody give me a procedure on doing this?

Regards,
Ben

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Ben

'85 500 SEL
'85 928S2
'88 560 SEC
'90 750i