Tranny problem - PeachParts Mercedes-Benz Forum

filon102 · #1 08-09-2009, 05:57 PM

Hey guys! Im new to this forum so plz bare with me

My dad owns a 1987 Mercedes Benz 300D Turbo Black/Black... but we paid 1500 bucks to get the tranny fixed cause it was leaking. Now the tranny is shifting at higher rpm for some reason. Any1 know how to fix this?

Matt L · #2 08-09-2009, 06:45 PM

Sounds like it is not adjusted properly. There is a vacuum adjustment and a cable, both of which need to be right. Did this behavior start with the repair? If it did, is your car now shifting at too high of an RPM, or was it too low before? If the former, take it back to the shop.

babymog · #3 08-09-2009, 06:52 PM

The shift points are controlled by the "bowden cable" which is connected at the cruise-control to the throttle linkage. Tighter is later shifts, more slack is earlier shifts.

My adjustment was always to adjust to almost no slack at idle.

dariod · #4 08-09-2009, 06:54 PM

Not sure how to help you with problem is this your car?????

http://chicago.craigslist.org/wcl/cto/1314181574.html

Matches your description and problem

Matt L · #5 08-09-2009, 06:58 PM

If that's not it, it would have to be his evil twin with an identical car. Or maybe his good twin; you can never be sure.

filon102 · #6 08-09-2009, 08:02 PM

Quote:

Originally Posted by dariod

Not sure how to help you with problem is this your car?????

http://chicago.craigslist.org/wcl/cto/1314181574.html

Matches your description and problem

actually it is just post it up today, the fact is that last owner, did NOT take care of the car... and im pretty much giving up on the car itself thats why im selling it....

is there a how to section to fix that problem from step to step? its now 1 1/2 years since the warranty on the tranns got out... and it really pisses me off....

bsmuwk · #7 08-09-2009, 08:44 PM

I know where you took those pictures. My friends have a lot of fun around there...pavement tells the stories.

Believe it or not, I'm actually a few minutes away from you. The Mobil car wash on Belmont and River Rd is where I'm usually found.

Adjusting the shift points isn't very hard. Should be a matter of adjusting the bowden cable. Someone mentioned already I think. I saw the car earlier today on craigslist..boy was my pocket itching. I would love a diesel to play with...if I sell a 2.8 300e i bought a few days ago...maybe..

sixto · #8 08-09-2009, 10:07 PM

The adjustment point is just ahead of the oil filter. Easier if you remove the windshield washer reservoir. It's not the cable that comes in from the driver side, that's the throttle cable. The transmission Bowden cable comes in from the firewall.

If it's shifting at higher rpm, I would think it needs more slack. More tension would make the tranny think you're deeper into the pedal and thus hold lower gear longer.

Sixto
87 300d

filon102 · #9 08-09-2009, 10:39 PM

Quote:

Originally Posted by bsmuwk

I know where you took those pictures. My friends have a lot of fun around there...pavement tells the stories.

Believe it or not, I'm actually a few minutes away from you. The Mobil car wash on Belmont and River Rd is where I'm usually found.

Adjusting the shift points isn't very hard. Should be a matter of adjusting the bowden cable. Someone mentioned already I think. I saw the car earlier today on craigslist..boy was my pocket itching. I would love a diesel to play with...if I sell a 2.8 300e i bought a few days ago...maybe..

heheh u got that right there are marks on the pavement lol, I was there today to clean up the mercedes, and dont try that electric car wash... cause i went there today and my whole license plate in the front was all dented (bastards)

ooo well lol it happens... lol

well im going to try fixing it with my dad, if i have anymore questions i shall ask (or search 1st)

thx guys