w140 gearbox change PROBLEM - Mercedes-Benz Forum
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post #1 of 3 (permalink) Old 02-18-2014, 03:24 AM Thread Starter
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Date registered: Nov 2007
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w140 gearbox change PROBLEM

hi all

just changed my gearbox with another w140 gearbox....
gear shift without any kicks but to install the gearbox,
the control side box with pipes had to be replaced as the gearbox
i got had a box with an extra pipe... so i put the box of my gearbox
with the other i got to install....

now my problem:

shifting is very smooth with no kicks and in manual
everything looks ok.... but in automatic

problem 1: 1st to 2nd take a bit longer... but this is
not the real problem as maybe the other gearbox is geared higher

problem 2: then when shifing to other gear to shift... the engine
get to the rev limit... then engine start knocking (limiter gets in)
and gear does not no in.......
then to shift to other gear you have to lift from throttle padel
and so reduce car revs and give then give throttle again inorder to shift
At this point gears are shifted smothly!!!! (like iving a but more energy)

why is problem 2 happening.... due to the change to this side input box
with pipes?

did i have to change the torque converter with one one i had before???

Last thing this my old box had one diaphram and the one that
was installed in the gearbox i got (the i did not use had to diaphrams)

...is this causing my problem?

if yes how can i fit this box with this extra pipe!!!!


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post #2 of 3 (permalink) Old 02-18-2014, 06:58 AM
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Date registered: May 2006
Vehicle: 93 SL500, 95 SL320, 96 S320, 98 S500, 2002 E320 4Matic Wagon & A little 91 5.0 FORD Mustang
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Update your profile data, so we know what kind W140 by the year and engine type?

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post #3 of 3 (permalink) Old 02-18-2014, 11:52 AM Thread Starter
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i have mercedes se 500
automatic transmission
- 1992 model - 5.0L W140 with 119 engine
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