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#1
11-03-2012, 03:15 PM
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Did you every figure out the problem?
I have the same issue, part throttle, high load and its almost as if someone is engaging then disengaging the clutch over and over again causing it to oscillate back and forth getting worse and worse. Letting off of the gas causes a considerable jerk, and getting back into it again does the same... 
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#2
11-03-2012, 04:15 PM
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I was also wondering that, I think its the springs in the clutch disc getting weak. My 240D does the bucking thing under certain circumstances with about 50K on the clutch.
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 1985 Euro 240D 5 spd 140K 1979 240D 5 spd, 40K on engine rebuild 1994 Dodge/Cummins, 5 spd, 121K 1964 Allice Chalmers D15 tractor 2014 Kubota L3800 tractor 1964 VW bug "Lifes too short to drive a boring car"
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#3
03-18-2013, 07:08 PM
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Went out jacked the car up on one side in gear E brake down. could turn the wheel about 1/8 of a turn! and driveshaft to diff had about 1/4" play.
I think my original thought was right, and the diff is the problem. I know someone said bearings would wine with that much backlash, but I'm guessing that happened a Looooong time ago. in gear you can roll the car back and forth several inches.
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190D SOLD 2.5 non turbo 5 speed manual transmission Build date: December 1985 W211 E320 CDI W126 350SDL X204 GLK 250 Sans Bluetec
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#5
03-18-2013, 08:02 PM
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I know that doesn't sound like much but it translates a lot over the whole car. I have actually never seen a car move that much in gear before
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190D SOLD 2.5 non turbo 5 speed manual transmission Build date: December 1985 W211 E320 CDI W126 350SDL X204 GLK 250 Sans Bluetec
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#6
03-20-2013, 02:42 PM
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I also notice when IN gear there is not much play at all in the shaft, but out of gear a LOT of play before the shaft turns the wheels.
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190D SOLD 2.5 non turbo 5 speed manual transmission Build date: December 1985 W211 E320 CDI W126 350SDL X204 GLK 250 Sans Bluetec
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#7
08-19-2013, 10:05 AM
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Soory for my abcence on the forum , going back to my jerking issue on my 1986 2.5 whit manual gear box.
The butterfly in top of the air box is not working , unit is fine vacum is OK , I apply voltage to the selenoid and is working fine the damper is functioning OK. I was searching for a electrical diagram to find out who is controling the selenoid but no luck , any ideeas who is controling the selenoid ? , or sombody can help whit a electrical diagram . Please help this old Merc. to be alive again ,thx.
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