560 SEL - starts. shifts but wont move
Super Member
Joined: Jul 2005
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From: Manassas, VA, USA
2011 VW cc, 2004 ML350
When you shift into Drive or Reverse and apply the throttle, does it rev freely or seem to have a load? If it seems to have a load but won't move, you could have a final drive problem or (a) frozen brake(s). Has the car been sitting for a long time? More info please. This forum is an excellent source of help, but we need as much info as you can give.
BTW welcome to the forum!
BTW welcome to the forum!
Thread Starter
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Originally Posted by PaulX608
When you shift into Drive or Reverse and apply the throttle, does it rev freely or seem to have a load? If it seems to have a load but won't move, you could have a final drive problem or (a) frozen brake(s). Has the car been sitting for a long time? More info please. This forum is an excellent source of help, but we need as much info as you can give.
BTW welcome to the forum!
BTW welcome to the forum!
Thanks.
I have been using the car. I had drove it an hours ago. came back home. started it an hour later. it started fine. but wont move.
about your question: it rev freely. there was no load on the car. no movement of RPM. let me know if you need more info.
Thanks again.
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My 88 560 sel does this also but intermitently. You start it up and put it in gear press the gas and nothing, it moves but absolutely no power. It is like the fuel pumps are not working or only one is. Enough pressure for idle but nothing else. I haven't been able to figure it out myself because it only happens once a week but goes away and works fine. I'll be watching this thread....
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Joined: Feb 2005
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From: North Carolina
98 Black C43 , 12’ ML 350 Blutec
Originally Posted by sam560sel
I have 89 560SEL. It has 115K miles. It starts fine. it shifts into drive, reverse, but it wont move the car? Lever seems OK
what to do?
Thanks
what to do?
Thanks
Newbie
Joined: Sep 2006
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From: Australia
Originally Posted by sam560sel
I have 89 560SEL. It has 115K miles. It starts fine. it shifts into drive, reverse, but it wont move the car? Lever seems OK
what to do?
Thanks
what to do?
Thanks
I suspect the valve body in your transmission has given up. If it is in gear, doesn't move and the engine revs freely, it definately sounds like a tranny issue.
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Member
Joined: Mar 2004
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From: Orange County,New York
Originally Posted by sam560sel
I have 89 560SEL. It has 115K miles. It starts fine. it shifts into drive, reverse, but it wont move the car? Lever seems OK
what to do?
Thanks
what to do?
Thanks
There are a couple of possibilities, with the engine running in park read the transmission fluid level on the dip stick, if you see an overfill level the front pump failed, internal. You can confirm a pump failure with a gauge. If it’s at the proper level, does the fluid smell burnt and what color is it, no smell and clean, valve BodyOr a plugged filter
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Member
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From: Orange County,New York
Originally Posted by GJFenez
My 88 560 sel does this also but intermitently. You start it up and put it in gear press the gas and nothing, it moves but absolutely no power. It is like the fuel pumps are not working or only one is. Enough pressure for idle but nothing else. I haven't been able to figure it out myself because it only happens once a week but goes away and works fine. I'll be watching this thread....
Super Member
Joined: Aug 2005
Posts: 801
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From: Mercerville New Jersey
1991 560SEC Teal 1989 420SEL Ice Blue 1984 500SEC White
560 SEL - starts. shifts but wont move
I know this sounds stupid, but could it be as simple as the shifter bushings?
BENZITCH
Bruce
BENZITCH
Bruce
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Joined: Jun 2005
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Did He Fix It?...
For the rest of us with interest, I note that he says no increase in RPM which has me guessing his throttle linkage ain't linked (happened to me a year ago). But then again he said it "revs freely" and also said "no movement of RPM"?
Kevin
Kevin
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126 Shift problems
Steve:
Have following recent trouble with my 126 420 SE E/S transmission: (1) Shifts perfect 1-2 in D but spins on 3 shift. (2) Shifts once in 3 but spins next gearchange
(3) Shifts perfect in 2. No problems in P-R-N-2. Recently changed modulator valve and made shifts smother but no improvement in problems. Can modulator valve be adjusted to fix problem? I've heard about a K-27 spring change to fix this problem; what's part No. and can it be changed in site; or is it the valve body part No. and can it be changed in place. Transmission had recent oil and filter change. I've been around long enoug with these transmissions to know that if first 2 gears shift smoothly and all other gears engage and work per specs that no tranny rebuild is called for. Car has 103K miles.
Thanks.
Karl
Have following recent trouble with my 126 420 SE E/S transmission: (1) Shifts perfect 1-2 in D but spins on 3 shift. (2) Shifts once in 3 but spins next gearchange
(3) Shifts perfect in 2. No problems in P-R-N-2. Recently changed modulator valve and made shifts smother but no improvement in problems. Can modulator valve be adjusted to fix problem? I've heard about a K-27 spring change to fix this problem; what's part No. and can it be changed in site; or is it the valve body part No. and can it be changed in place. Transmission had recent oil and filter change. I've been around long enoug with these transmissions to know that if first 2 gears shift smoothly and all other gears engage and work per specs that no tranny rebuild is called for. Car has 103K miles.
Thanks.
Karl
Member
Joined: Mar 2004
Posts: 198
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From: Orange County,New York
Steve:
Have following recent trouble with my 126 420 SE E/S transmission: (1) Shifts perfect 1-2 in D but spins on 3 shift. (2) Shifts once in 3 but spins next gearchange
(3) Shifts perfect in 2. No problems in P-R-N-2. Recently changed modulator valve and made shifts smother but no improvement in problems. Can modulator valve be adjusted to fix problem? I've heard about a K-27 spring change to fix this problem; what's part No. and can it be changed in site; or is it the valve body part No. and can it be changed in place. Transmission had recent oil and filter change. I've been around long enoug with these transmissions to know that if first 2 gears shift smoothly and all other gears engage and work per specs that no tranny rebuild is called for. Car has 103K miles.
Thanks.
Karl
Have following recent trouble with my 126 420 SE E/S transmission: (1) Shifts perfect 1-2 in D but spins on 3 shift. (2) Shifts once in 3 but spins next gearchange
(3) Shifts perfect in 2. No problems in P-R-N-2. Recently changed modulator valve and made shifts smother but no improvement in problems. Can modulator valve be adjusted to fix problem? I've heard about a K-27 spring change to fix this problem; what's part No. and can it be changed in site; or is it the valve body part No. and can it be changed in place. Transmission had recent oil and filter change. I've been around long enoug with these transmissions to know that if first 2 gears shift smoothly and all other gears engage and work per specs that no tranny rebuild is called for. Car has 103K miles.
Thanks.
Karl
Hi Karl,
I seen your post on Mercedes Shop, so I am assuming you did not receive my replay e mail,. I am reposting my response. If you need more let me know.
HI,
When you say spins, you mean slipping from 2nd to 3rd, how about 4th gear. Which vacuum modulator did you buy, if you have the one with a black cap, remove it and pull the T handle out a little, then turn CW two turns to increase working pressure install the cap and drive. If you have the one with a white plastic cap, garb it and turn CW until it stops, you can only adjust this new style once. If the transmission still slips after the installation of the K1 kit, the clutches are brunt, it’s internal.
To install the K1 spring kit, the pan must be removed, inspect the pan and filter for excessive metal or clutch material, if clean; Identify the K1 as illustrated in the picture it’s on the front of the transmission. Remove the four screws on the plate, and then remove the K1 accumulator with springs. Note the sequence of the parts. Assemble the new K1 kit exactly as the one removed, then install the assembly into the valve body. 1/2hour job. K1 spring Kit MB # 126 270 44 77
Keep me informed
Steve C
Junior Member
Joined: Oct 2006
Posts: 18
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From: CT
03 VW GTi 20vT & 89 300SEL
i had an almost exact problem on my 420sel. The selector would move as normal to every gear, but the engine would rev freely as if it were still in neutral. the valve body turned out to be shot... threw in a 560 tranny shortly after 
MBWorld Fanatic!
Joined: Apr 2006
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From: Toronto
2006 E320 CDi, 2008 3/4 Ton Suburban, 2007 "rice rickshaw" Accord 5 speed
how did you do it?
As to your wonderful sounding transplant project how did you do it? It must have cost you big bucks putting all that GM hardware into a 560. Did you do all the fabrication to accomodate the 4L60E transmission? I often wonder why all the GM enthusiasts bother to soup up their engines and powertrains when there are so many emission legal choices available? One combination that immediately comes into mind is the Denali 6 liter Vortec with 380 bhp paired with the 6L80E transmission! Vrooooooooom.
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From: bergen county , nj
1984 500 sel euro
i have an '84 500 sel and mine acts up in reverse sometimes .. i found that i fiddle with the gear shift a little and wiggle it its fine
Last edited by FIREBEAR; Dec 2, 2006 at 04:37 PM.
Newbie
Joined: May 2016
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1991 420 del W126
I'm stumped whether I need a new tranny or replace B2, piston, or seal.
Thanks.
Newbie
Joined: Mar 2022
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W126 mercedes benz 560 Sel 1987
my 87’ 560 SEL w126 lags when i accelerate
i’m having issues with my benz, i bought it about 2 years ago from a guy who said he just wanted to give rid of it because didn’t have time to work on it. said he’s had it sitting since he bought it. so far i’ve changed the ICV selanoid , fuel pumps and a Relay (can’t think of name) . after i changed the ICV it finally shifted right, before it wouldn’t catch gears. it did reverse better than shifting it to Drive. once i changed the Relay it drive better, icv drive better but now it still lags and over heats. it won’t accelerate, i have to step on the pedal for it to move which is why it would over heat…… mechanic did tell me i had to change the computer? ect …. could you guys please help, anyone. thanks!!!
