82SD
Shifter was rebuilt because of excessive slop
and it was not going into 4th gear.3rd gear
was iffy.

Now, after new bushings, it will shift into all 4
gears IF you pull out slower that a 240d going
up hill on a Sunday drive.

Any attept to pull out normally will result
in the car hanging up in 2nd gear to about 3500rpm
before banging into 3rd. 4th is not an option as for
as this is concerned.....it just won't go.

I have zero back ground on the car other than
the bushings I installed.

Is this an internal problem or vacuum?.....or other?

__________________
81 Mercedes 300SD 289k.......SOLD
82 Mercedes 300CD 252k......slow ride

82 mercedes 300 SD...mi Unknown
83 Mercedes 300D ????ksniff..gone too
84 Mercedes 300D 148k........SOLD
85 Mercedes 300TD 386k and holding some one elses project

I would disconnect the bowden cable at the linkage and see if that helps. If it does, that would point to an adjustment issue (too tight).

__________________
James Marriott
2003 Buick Regal
1983 300D (228k, frau Auto)
1996 Suburban K2500 (192k, 6.5 turbo diesel/4WD towmaster 10,000)
www.engineeringworks.biz
1987 300SDL junker 170k
1982 300SD junker, 265k

Or you can turn in the Bowden cable (wire) to shorten the time between shifts.

__________________
83 SD

84 CD

It would appear that you've got more than one issue. The proper term when the engine runs away between shifts is "flaring". Clearly, it's got the traditional 2-3 flare.

This situation is typically caused by wear internal to the transmission, however, it can usually be managed via the adjustment of either vacuum or modulator pressure, or both.

Vacuum is the simplest to adjust and it involves reducing the vacuum to the modulator. This requires a proper Mityvac for making the adjustment. Do a search in the archives about adjustment of the VCV and the procedure is fairly straightforward. If you get stuck, repost on this thread and I'll assist you with it.

If you wish to make a quick check to see if the vacuum will help, just disconnect the vacuum line to the modulator under the hood. With no vacuum, your 2-3 flare should be eliminated or severely reduced. However, it will likely be banging on all downshifts, thereby requiring some vacuum adjustment to get the proper compromise.

If the vacuum doesn't give the necessary benefit, it's time to make a modulator adjustment and increase the modulator pressure somewhat.

No, it is not flaring, it is simply stuck in gear. Not shifting at all.

__________________
81 Mercedes 300SD 289k.......SOLD
82 Mercedes 300CD 252k......slow ride

82 mercedes 300 SD...mi Unknown
83 Mercedes 300D ????ksniff..gone too
84 Mercedes 300D 148k........SOLD
85 Mercedes 300TD 386k and holding some one elses project

If it's not flaring, and won't upshift, take a look at the kickdown switch. Beneath the accelerator pedal is a switch that typically gets contaminated with dirt and debris and gets stuck in the closed position.

However, this switch usually affects all gears, not just 3 and 4.