Our 95 E320 has a weak reverse, it needs quite some rev's to get it moving (in reverse sometimes if it gets in a deep pothole it wont even move), in drive it would shift at 2300 RPM only (did some adjustment to the vaccume and got 100 rpm higher shifting point) what am i looking here, tranny rebuild, some valve replacements, NEW TRANNY ?!?!? Help out here i am running out of options...

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Current Garage
2008 Mercedes GL320 CDI 188k mi Repair/Work in progress
1994 S350 160k mi Garage Queen & prepping for repairs
2005 E320 CDI 203k mi Healthy & Daily Driver
1994 S350 357k mi Retried as parts car
1984 300TD 214k mi Blown OM617 Poss OM603 Swap??

Sold
1987 300SDL 200K+
1994 S320 181K mi
2008 E320 Bluetec 127k mi
1999 S420 130K mi
1980 240D 360k mi
15+ Others that has come, stay and gone

GONE, BUT NOT FORGOTTEN
1995 E320 SE 220k mi
1984 300SD 350k mi

I'd start by dropping the pan.

Look in the pan for anything other than fluid. If parts, you need repairs. If silt, you have severely worn friction band or clutch surfaces and will likely need to rebuild. If nothing, it might be the front pump which a transmission shop can check by running pressure tests.

The working pressure can be adjusted with the modulator on the side of the transmission (search "modulator") and will firm up shifts (clockwise) if the pump is putting out enough pressure/volume.

You might get lucky (if the friction surfaces are not too worn) also by rebuilding the valve body (which can be done without removing the transmission from the car).

Most diagnosis starts with fluid levels and condition, pan contents, and pressure tests.

If the car has had a recent "flush" of the transmission fluid, this is a normal way for it to die.

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Gone to the dark side

- Jeff

My trans was slippn in reverse then it just locked up I replaced trans with use one its slippn to in reverse but not locked up yet do you think its the trans or switch or something dont want to keep replacing trans and it could be some adjustment to be made

In our 1989 190e 2.6 (similar transmission?) that was the first sign of needing a rebuild. A spring bracket had fractured, allowing the reverse clutches to be always partly engaged, thus wearing out the clutches. New bracket and springs, gasket, seal and clutch plate set, and away we go again.

Andrew
1989 190e 2.6

I have just finished getting a replacement transmission in this morning. Same problem - no reverse however all forwards were good.
I looked at just getting the reverse piston repaired however after removing my transmission oil pan I saw that there was a fair amount of ground up fine material in the pan and filter.
Didn't screw around. Changed out the transmission - took 4 hours. Found a great condition alternative transmission with 75K miles on it.

Here is a foto of the filter. You can see the residue on it. If your filter looks like this - don't hesitate - get another transmission or a rebuild.

My experience & forum observations have been that the 722.3 - 5 (nonelectronic) trans. are not very reliable, and are prone for failure once the reverse gear starts acting up. Replacing w/ a used trans. will just invariably end up w/ a failed trans. Rebuilding seems to be the only way to avoid buying a used headache, and getting peace of mind. Finding a good/competent trans. mechanic is the trick. Just my thoughts . . .

Worn B3 clutches (reverse), common internal problem in 722.3 transmissions

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Steve Cattaneo www.mastertechtrans.com


03 SL500
02 MB AMG
87 560 SEC
87 300D
928S 83
85 928 S2 EURO

You could have fooled me, I was thinking they're about the longing lasting automatic transmission ever made, 2 or 3 times the life of their successors. With even minimal maintenance and respect they commonly go 200 to 300k miles.

Check the forward pump A1402700097 it has been updated several times and the piston for the reverse speed A1262720931. It's just behind the pump.

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600SEL '91
300E 4Matic '88
240D '83
280SE '77
350SE '73
The most complex systems can fail in the simplest way.
Contra verbosus noli contendere verbis, sermo datur cunctis, animi sapientia paucis.

i don't believe in the lord! He's never bought me a Mercedes Benz.

the reverse it very weak as yours was. i heard something about a band adjustment was wasn't sure if that works on a 722.361 seth