If my problem described previously is familiar to anyone, please give advice - I am about to order a remanufactured transmission and don't want to miss something.

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DHB

Sorry no one's answered so far, can't give experienced answer here, but my guess (from over 30 years as a P/T mech) is that the new engine has a bit more torque and is causing the slippage from that, BUT, unlike a manual, the torque converter should dampen that effect??

Was the torque converter changed?

Seems that there's another issue and you need to find someone who knows MB auto tranny tuning and vacuum systems BEFORE spending the $'s on a tranny.

For the $'s that a built auto costs, my hands-down choice would be to convert to the 4-spd. The 240 really is a dog with the auto and the manual helps a lot with that. It should be about the easiest swap you could possibly do. After converting a 300D Turbo to a 240D 4-spd, I would certainly do it again if the need arose and with a 240 it would be WAY easier yet.

Anyway, if I were closer I'd offer to come check it out and see if we could find the problem with the auto or help with a manual conversion.

Before you buy a rebuild, find someone who REALLY knows the merc autos and spend a few $'s to have them check the controls first.

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1984 300D Turbo - 4-speed manual conversion, mid-level resto

1983 300D - parts car

1979 300TD Auto - Parts car.

1985 300D Auto - Wrecked/Parts.


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"If you don't know where you are going, any road will get you there". Lewis Carrol

Don't spend your money yet.

Assuming you are talking about this thread, you really should do three things.

1. Search the archives for your topic using the search button at the top right of the page. Transmission slippage is one of the most often discussed topics on this board, and there is a lot of great information already here.

2. Post followup questions as replies to your original post, instead of starting a new thread. That way nobody has to go hunting for your original post like I did.

3. Wait more than an hour and 15 minutes for somebody to respond.

To get you started, here is a great thread that has information about your very problem. It also has a link to an article by Steve Brotherton from Continental Imports describing how to adjust the transmission.

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Rick Miley
2014 Tesla Model S
2018 Tesla Model 3
2017 Nissan LEAF
Former MB: 99 E300, 86 190E 2.3, 87 300E, 80 240D, 82 204D Euro
Chain Elongation References

And it does make a difference how the car is driven.... are you feathering the throttle in betweeen shifts - or just slamming the accelerator to the floor as the tranny flares??

Another question - are you in habbit of using the shifter..... say dropping gears manually to accomodate heavy traffic or extended uphill climbs??

If it was me, I'd be looking at how my driving habbits effect transmission performance.

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'80 300SD/ w116
'79 240D 4-spd
'71 750cc Guzzi

previously owned:

'83 240D 4-spd
'77 280SEL 4-spd
'74 280/8
'72 250/8
'65 220Sb 4-spd
'63 220Sb 4-spd
'63 190c 4-spd
'61 220Sb 4-spd
'60 190b 4-spd

This sounds like a vacuum bleed issue.

Try disconnecting the vacuum line that runs to the modulator. If the trans is OK, you'll get extremely solid (abrupt) shifts...if it still slips, you have a transmission problem.

If you get hard shifts with the modulator disconnected (hopefully you will), you need to go through oneof the following procedures for adusting the transmission.

http://www.wagoneers.com/DieselBenz/TECH/Trans-ADJUSTMENT.html

http://www.mercedesdismantlers.com/722.3and722.416_transmission_adjustments#722.3%20Series%20and%20722.416%20Transmission%20Adjustments

http://transmission.mbzarticles.org/adjust/

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Never a dull moment at Berry Hill Farm.