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#1
04-19-2010, 11:48 AM
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Stepping into the tar pits.......
Father in law type person (Ed) needed wheels that would go more than 3 miles without needing water, so Darling Wife and her Twin Brother and I pooled our fundage and bought him some in the form of a 1990 300D 2.5.
Tight, clean, screaming red, 239k miles. Owned for the last six years by a guy Ed has called 'the best mechanic in Maryland' for the last couple decades. Only issue we want to work out - harsh shifts, especially when cold, primarily 1-2. Looks like there is LOTS of related info in this forum - any pointers you fine folks might have on which of what looks like ~ a gazillion threads would be the best starting point would be most appreciated.
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1961 220b: first project car - sold. 2000 CLK 430: first modern Benz - sold. 2001 CLK 55: OMG the torque!!! - sold 1972 280SE 4.5: Baby Gustav 1991 300TE 4Matic: Gretel the Snow Bunny - sold 1978 300SD: Katz the Free Man - given away 1980 Redhead: Darling Wife 
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#2
04-19-2010, 11:55 AM
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Probably your best start point is
Resources tab at top of screen then DIY articles then Tuning transmission Vacuum under General Repairs. Good starting point.
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BENZ THERE DONE THAThttp://www.peachparts.com/shopforum/...c/progress.gif 15 VW Passat TDI 00 E420 98 E300 DT 97 E420 Donor Car - NEED PARTS? PM ME! 97 S500 97 E300D 86 Holden Jackaroo Turbo D 86 300SDL (o\|/o)
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#3
04-19-2010, 12:07 PM
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and while this thread is specifically for the older benz, there is a TON of info here.
It's CRITICAL... how you set your transmission's vacuum system on your diesel MBZ...
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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread "as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do! My drivers: 1987 190D 2.5Turbo 1987 190D 2.5Turbo 1987 190D 2.5-5SPEED!!!  1987 300TD 1987 300TD 1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!
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#4
04-19-2010, 01:36 PM
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Alda adjust will help with part-throttle harsh shifts, next step would be looking for vacuum leaks.
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 Gone to the dark side - Jeff
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#5
04-24-2010, 10:21 PM
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Finally got a chance to get into this today. Two steps clockwise to the T-handle at the modulator on the side of the transmission later, and she's shifting like butter.
Thanks for the pointers folks - I now know far more about how the shifts are controlled; really glad that the first, simple adjustment made the difference. From everything I read, sounds like it only gets more complicated as you stack up the variables.
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1961 220b: first project car - sold. 2000 CLK 430: first modern Benz - sold. 2001 CLK 55: OMG the torque!!! - sold 1972 280SE 4.5: Baby Gustav 1991 300TE 4Matic: Gretel the Snow Bunny - sold 1978 300SD: Katz the Free Man - given away 1980 Redhead: Darling Wife
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#6
04-25-2010, 05:01 AM
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You Have, Simply Stated, Defined MB Tranny Adjustment
Have to start with a "Baseline" of the Engine "Making Proper Power"
('Else the engine difficulties will disguise as Tranny Problems.) Stevebfl's articles: http://www.peachparts.com/Wikka/TransVacTune http://www.peachparts.com/shopforum/tech-help/19841-transmission-shifting-response-vacuum-span-stevebfl-you-out-there.html#post100041 and SMR's : It's CRITICAL... how you set your transmission's vacuum system on your diesel MBZ... Are an excellent starting point to understand the system. I'm afraid a lot of owners jump right in where they PERCEIVE the problem is [without really understanding AND correctly Diagnosing] Making their attempts at correction a Journey Farther and Farther away from The Proper Adjustment Sequence.
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'84 300SD sold 124.128
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