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  #1  
Old 06-07-2011, 12:10 PM
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95 E300D shifting point

what are the correct transmission shifting rpm for a 95 E300D. Mine will upshift at 4500 rpm with pedal to the floor (not pressing the kickdown)

it also upshifts very quickly - I mean normal city driving causes the transmission to get to 4th gear at 40 mph.

I tried to adjust the transmission cable - but all it caused was a harsh upshift in all gears.

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  #2  
Old 06-07-2011, 12:35 PM
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With the cable adjusted as per the manual, and with fairly gentle to moderate pressure mine changes up @ approx 2500. This translates at the lowest speed I get into 4th is 30mph.
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  #3  
Old 06-07-2011, 01:29 PM
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whats the rpm shifting point when you go full bore joining the M1
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  #4  
Old 06-07-2011, 01:59 PM
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She'll wind up pretty high before changing if I put my foot down, more like 3500-4000. I tend to hold mine in 3rd manually if I want the best acceleration, this engine doesn't wake up 'till it's passed 2500 anyway...
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1993 320TE M104
---------------------------------------------------
past:

1983 230E W123 M102
1994 E300D S124 OM606 (x2)
1967 250SE W108 M129
1972 280se 3.5 W108 M116
1980 280SE W116 M110
1980 350SE W116 M116
1992 300E W124 M103
1994 E280 W124 M104
----------------------------------------------
"music and women I cannot but give way to, whatever my business" -Pepys
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  #5  
Old 06-07-2011, 02:06 PM
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hmm - thats what I do too. hold it in 3 and let her wind up.. I think thats normal for this vehicle then.
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  #6  
Old 06-10-2011, 02:24 PM
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Zulfiqar, that's about how mine behaves, too, so I think that's normal. It seems to be designed so that under partial throttle it favors earlier shifts for a smoother ride, with later (harder) shifts at WOT (wide open throttle).

I have the Intro to Service manual for the E300D which lists the factory-spec shift points. I'll look them up and post here when I get home.
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Old 06-10-2011, 03:56 PM
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Thanks - I would appreciate it.
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  #8  
Old 06-10-2011, 03:59 PM
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So adjusting the bowden cable didn't effect the shift points at all? I think it should. Shortening it ups the shift points and lengthening it lowers them.
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  #9  
Old 06-10-2011, 04:06 PM
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I adjusted the bowden about 1 thread outwards and all it did was harshen the shifts when below normal engine temperature.
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  #10  
Old 06-10-2011, 04:07 PM
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The reason I asked this is because if the engine rev limit is 5500 rpm why does the transmission not allow the engine to go above 4500 rpm during acceleration.
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  #11  
Old 06-10-2011, 04:10 PM
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Quote:
Originally Posted by Zulfiqar View Post
I adjusted the bowden about 1 thread outwards and all it did was harshen the shifts when below normal engine temperature.

Try a few threads inward. It should raise the shift points.
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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
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  #12  
Old 06-10-2011, 04:11 PM
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inwards would loosen the cable causing even more early shifts wouldnt it.
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  #13  
Old 06-10-2011, 05:19 PM
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Yes, if inwards loosens, that's the wrong direction to move shifts up.

How is the vacuum in your system? How long have you owned it? Maybe the car had hard shifts due to lower than normal vacuum and instead of solving that problem someone just moved the shift points downward whether they would be less harsh due to the position of the accelerator pedal.
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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
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  #14  
Old 06-10-2011, 05:52 PM
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I'll get a vacuum gauge and measure vacuum, All vacuum functions work in the car, the PO had the entire A/C renewed for the evaporator problem. the only vacuum problem was the rear headrests which I sorted out, the problem was behind the brake booster. And while there I had to plug a red/green vacuum line going to the right fender of the car as I could not find the other broken bit to connect it to under the wiper mechansim. A thick rubber vacuum line was put directly into the dash control main vacuum line bypassing the multiline yellow joint - I think its called an amplifier

The shifts are very soft under part throttle and aggressive at full throttle, but it does not like to downshift unless I push the pedal all the way but not hit the kickdown switch.
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  #15  
Old 06-11-2011, 06:44 AM
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If your car shifts at 4500 rpm when floored there is something wrong. Suggest changing fuel filters.

When I did the EGR modification, the "eagerness" of the trans to downshift under part throttle improved markedly. I highly recommend this mod. It improves drivability nicely.

Rgds,
Chris W.
'95 E300D, 342K

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