Well after reading for two hours and thinking in the middle I could probably just install my 240D's standard faster than I could get through this thread
I pushed through ! This resulted in a wealth of info. If you start at the end or the middle the full effect of it will not be realized.
The 81 300SD I just transplanted the 83' motor into would break your neck and chirp the tires when shifting through the gears. Thus I found this thread.
The new engine had a brand new VCV valve on it nothing wrong with that right ??? Wrong !!!!
I removed the EGR valves ..... no difference
Changed the green dash pot......... no difference
Checked for bleed down on the modulator........it Held vacuum
Changed the new VCV valve for the old ugly one (original to the 81's trans ).............. OH WHAT A FEELING !!!!!!!
Who ever installed it "adjusted " it . Vise grip marks on adjuster screw!! There's your theory of just a little adjustment is possible Brian. Spring was tweaked and never shut down the bleed valve
May be what killed the trans in the 83' ???
The car shifts better than my 2003 4runner !!!!!
On a side note I did not find one orifice fitting on any vacuum line on this car. All vacuum systems work flawless.
Therefore I agree with Brian as for the tuning of the VCV valve being the Key here . Even the original Steve Brotherton paper states Mercedes went through numerous changes. They finally settled on the amplifier "to reduce the sensitivity of the final signal to small changes in the proportional signal ". ( VCV valve is the proportional control )
I wonder if the newer 85' system can be incorporated into the older cars ? Cost effectively ? If not keep tuning !!!
Thanks to all who contributed to this thread ! Thanks Brian for sticking with this thread I appreciate the time and energy it took ! Also for passing on the knowledge to those of us new to Mercedes autos.
The wife says a big thanks as well !!!! ( its her car )