1)- Here is the vacuum press I get in the main line:

http://www.youtube.com/watch?v=4E5U4Gg_Yk8


2)- Here is a pressure test for vac line to transmission modulator:

http://www.youtube.com/user/baft995874#p/a/u/2/NQO4nCvNgj0


3)- Here is vacuum pressure in the transmission line:

http://www.youtube.com/user/baft995874#p/a/u/0/9Yqih7yWG-Q



See how I have about 20Psi at idle in main line and only 15psi in trans vacuum line. Normal?

Also while engine is shut down the vacuum goes to zero pretty fast. Normal?


Thanks

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1980 300TD(euro non turbo): Eng: 617.912 /Tran:722.118
1985 300SD: Eng: 617.951/Tran: 722.416

PSI? I think you mean inches of Hg.

The vacuum to the trans line is controlled by the pedal position.

Sorry, you are right in hg.

Well, is 15inhg at idle normal?

__________________
1980 300TD(euro non turbo): Eng: 617.912 /Tran:722.118
1985 300SD: Eng: 617.951/Tran: 722.416

search for "critical" on here, and you will find more to read on transmission vacuum than you can believe!
you can also post up the list for most viewed, and it'll be near the top.

wow, actually at the top! nearly 97,000 views! all you do is go to the list of threads and click the word views above the list...
it'll load in order of most viewed.

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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!

Yes, that's normal, 20 inHg (I get 25, but may be at a lower elevation, if that matters) and 15 inHg coming out of the top of the VCV.
My 1984 CD.

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83 SD

84 CD

Thanks ToomanyMBZ,

Knowing that this looks normal will help me continue troubleshooting.

__________________
1980 300TD(euro non turbo): Eng: 617.912 /Tran:722.118
1985 300SD: Eng: 617.951/Tran: 722.416