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#1
08-31-2009, 10:16 PM
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hard shift
OK, still finding new issues with my new sled, a 1980 300sd with 265,000 miles. It has a rebuilt tranny that's just about 2,000 miles old. The tranny shifts pretty hard from 1st to 2nd gear but the rest seem fine. Is this a problem starting or something that needs tuning?
Thanks, Dan 
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#2
08-31-2009, 10:23 PM
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Diesel Giant
Dan,
go to the Diesel Giant web page .. there is an excellent diagnostic page there on tranny shifting. roberto
__________________
1985 300SD 1998 Jetta TDI Previous: lots of diesel VW's, MB's, KW's, Pete, Freightliner Walking isn't a lost art: one must, by some means, get to the garage.
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#3
08-31-2009, 11:25 PM
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It's a vacuum problem. Likely too little vacuum to the modulator. There's a very very long thread on here which explains how the system works and how to adjust the vacuum and the modulator. Could be as simple as a disconnected vacuum line.
__________________
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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#4
09-01-2009, 01:23 AM
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It takes a while to read through it but it explains everthing:
http://www.continentalimports.com/ser_ic20242.html
__________________
84 300D, 82 Volvo 244Gl Diesel
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#5
09-02-2009, 01:00 AM
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ok, I've read through a lot of the thread. Probably should have stopped before I got confused but oh well. I have found my vacuum diagram http://peterschmidtransmission.com/images/617_9 but I am unsure of were to start so tell me if I have the steps right.
1. test for Vac leaks. 2. test for 15-10 in pressure at idle on backside of orifice and 0 in at full throttle. 3. I am clueless at this point and need help. My tranny only shifts hard between 1st and 2nd. Do you think just changing the orifice size will fix the problem or will I have to go deeper? If so what would be the logical first step?
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