I posted here a weeks ago few about an issue that appeared to be a minor problem with accelerator linkage. Today I had the first opportunity to take a serious look and I am afraid it is a tranny problem.
Here goes: Over a 2 day time period the acceleration became more and more sluggish requiring pushing down on the pedal more. The second day it was so bad that I barely got it home at speeds well below speed limit ( thanks again to all those honking and giving me the semi-international middle finger of peace sign) Today started the car let it warm up and slowly moved the shifter through the gears. As normal you could feel it as it went into Drive. As I pressed the pedal the engine speed increased without really bogging down but the car only
rolled 1/4 inch and no further ( driveway is on an incline) did not try reverse since the car is sitting near the end of the driveway and do not want to block the sidewalk or have it stranded in the street. I know the fluid has not been changed in awhile but it gave no other symptoms. Is this a B2 piston issue ?
Help !
Alan

__________________
92 500E Silver 66k
82 Porsche 911SC 84K
68 Cadillac ( Gone Now )
03 Suburban Z71 200K
85 300SD 217k From Original Owner ( Dad )

One other thing to clarify. It does rock forward when placed in drive. Have not checked reverse yet. At first I though maybe the parking brake was stuck on.
New pads were installed a few months ago.
Alan

__________________
92 500E Silver 66k
82 Porsche 911SC 84K
68 Cadillac ( Gone Now )
03 Suburban Z71 200K
85 300SD 217k From Original Owner ( Dad )

Need to check reverse. Just put it in reverse, put your foot on the brake and press on the accelerator to see if reverse is functioning.

__________________
1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
1999 Fuso FG Expedition Camper
1993 GMC Sierra 6.5 TD 4x4
1982 Bluebird Wanderlodge CAT 3208--Sold 2/13

I will do that when I get back home and see what happens. I hope it's nothing major. I am about to move and already have 2 cars not roadworthy. A third would be a problem.
Alan

__________________
92 500E Silver 66k
82 Porsche 911SC 84K
68 Cadillac ( Gone Now )
03 Suburban Z71 200K
85 300SD 217k From Original Owner ( Dad )

up until the last sentence I was thinking clogged fuel filter... then I was thinking B2 piston...
either way it's relatively simple to fix on an SD...
ya gotta verify if Reverse works... cause if it does, and it pulls strong in R, but nothing in D, then it's B2...
if it's the same in R, you could be looking at major transmission failure, but it could also be clogged fuel filters.

__________________
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 190D 2.5Turbo
1987 190D 2.5-5SPEED!!!

1987 300TD
1987 300TD
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!

VsTech, Thanks and as always very good advice. I know the see through inline filter is clear and I did run some Startron through a few months ago. I have extra filters and will change them out regardless. When I placed it in Drive it did jump a little forward and as I press the pedal down it appears the car is trying to move forward. As I said I will check reverse when I get home and keep my fingers crossed. Thanks gentlemen.
Alan

__________________
92 500E Silver 66k
82 Porsche 911SC 84K
68 Cadillac ( Gone Now )
03 Suburban Z71 200K
85 300SD 217k From Original Owner ( Dad )

Have not had a moment to get back to the 300Sd until yesterday. Had the grill going and a beer in hand. Went out she started right up after 3 weeks without hesitation. let her warm up ( even though it was 90 degrees in the shade) and then moved the shifter from P to D and then back to R. As it went into both forward and reverse gear it made the usual jump and you could feel it wanting to go. I still have not resolved why there is only 1/2-1 inch of pedal movement.
I looked at the linkage under the hood and it looks fine to me.
Does anyone have a good diagram of the the linkage from the pedal through the firewall etc to the IP. Aside from the lack of pedal movement I still think there is an issue. Putting the tranny aside for a moment I remember replacing the rear pads about a 2-3 weeks before this issue started. The parking brake was not adjusted at all and in fact had not been used in many years I am wondering if they have kinda locked up. This slow down was kinda progressive over 2 days time period and starting at the basics----- if the wheels do not turn. But again there is still an issue with something in the linkage that is preventing me from getting full movement at the pedal and ultimately the IP.

__________________
92 500E Silver 66k
82 Porsche 911SC 84K
68 Cadillac ( Gone Now )
03 Suburban Z71 200K
85 300SD 217k From Original Owner ( Dad )

Jack it up at each wheel and see if it is locked up. Maybe you are onto something with the brakes locking up. The front wheels should spin easily and with the back wheels, have it in neutral, or have both wheels off the ground and test.

__________________
05 SL600 75K
87 MB 560SL 119K
87 MB 300D 180K
83 MB 240D 110K
64 1/2 Mustang
74 Monte Carlo 32K
75 Fiat 124 Spyder
16 Equinox
15 2500HD Silverado

Exactly what I was thinking. The last work done on the vehicle was rear brakes and as far as the pedal travel it would not be the first time I broke something that was not supposed to break ( at least not easily ) I will get back here on Monday I am off that day and it will be my first opportunity to get it in the air.
Alan

__________________
92 500E Silver 66k
82 Porsche 911SC 84K
68 Cadillac ( Gone Now )
03 Suburban Z71 200K
85 300SD 217k From Original Owner ( Dad )