1975 Mercedes 300D
I have a 1980 300D and it recently developed a problem where it is having trouble shifting. I didn't drive it for awhile and when I went to drive it reverse wouldn't work, I heard it could be vacuum so I played with some vacuum hoses and it still wouldn't move in neutral, but it would move fine in the forward gears. So I let it sit for awhile more and now it wont move in any gears. I was wondering if you guys could help me figure out whether I need a newe transmission or is it just a vacuum problem. I think it's probably vacuum. I got the Haynes manual for it but that was pretty much useless.