at normal throttle it will go thru the gears to 3rd but won't go to 4th EXCEPT when I let of the pedal slightly, about a 1/4 inch then it shifts smoothly. am I looking at a vac prob or mechanical?

__________________
1993 MB 300D 245K died.

One thing that is worth checking is the kickdown switch. Unplug it, take it for a spin and report back to me. Start with small things first.

if it takes a lift, to shift, it's likely the kickdown switch, but it could be bowden adjustment.
try adjusting the bowden to it's loosest spot.

__________________
John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 560SL convertible
1987 190D 2.5-5SPEED!!!

1987 300TD
2005 Dodge Sprinter 2500 158"WB
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!

where is the kickdown sw and the Bowden adj on a 93 300D? if I can find it I can fix it

__________________
1993 MB 300D 245K died.

Kickdown Switch is behind the acceleration pedal.

Here's the Bowden Cable in the IMG below.

I'm also going to link you to the factory service manual, as I think this may benefit you in the long term including these adjustments. OM602 Service Manual.

Attached Thumbnails

 

After I check the switch which way should I adjust it? That may be it since I had to disconnect it to work on the injectors

__________________
1993 MB 300D 245K died.

Disconnect it and take it for a drive. If you still have the problem, it's something else.

I vote Bowden. There's a spin nut on the Bowden cable that you can turn by hand.. Where the cable is mounted to its bracket, engine side, not tranny side. Adjustments done with hood up, not back on the ground.

Try several turns in one direction, drive it, if not better, twice as many turns in the opposite direction. Repeat as necessary or until you run out of nut adjustment space. No change? Put it back to where you started. Note the starting amount of thread adjustment space on the thingy before you start.

__________________
Cheers!
Scott McPhee

1987 300D

the spin nut didn't do anything and the switches appear to be working tomorrow I'll adjust that rod posted a pic of, I think Mer Source talked about it on a vid some where

__________________
1993 MB 300D 245K died.

http://www.w124-zone.com/downloads/MB%20CD/W124/w124CD1/Program/Engine/602_603/30-3402.pdf has a pic but no instructions

__________________
1993 MB 300D 245K died.