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Old 03-23-2003, 09:03 PM
BIGRED's Avatar
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Join Date: Mar 2003
Location: Coarsegold Ca
Posts: 694
Vacuum - Trans Clunk

First thanks for those that offered suggestions on the routing of the vacuum lines.

I tired to study the images sent to me, and I guess I can't quite make out the images.

At present, it seems to upshift ok, put when coming to a stop the 2-1 downshift goes CLUNK. It didn't do this prior to the vacuum work I did, however upshifts were to quick and slipppppppppppppppppppped with the 23 and 34 shifts.

Any help appreciated.


btw this is a 80/81 TD-T.

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Old 03-24-2003, 10:12 AM
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Join Date: May 2002
Location: Central Oregon
Posts: 1,004
Good chance that you may have a bad mount either on the tranny or more likely the rear end. They are usually not a critical item until they fail....
If you can inspect them to see their conditionitmight help you.

I got to a local independant shop ecery other oil change and let him do it. It costs 49.95 but he does a safety check and any items that I notice like this I ask him about and he looks into them for me. If he finds something I often fix it myself and then the next time it's in for the change he looks things over again.
'99 S420 - Mommies
'72 280SE 4.5 - looking to breathe life into it
'84 300SD Grey - Sold
'85 300SD Silver - Sold
'78 Ski Nautique
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Old 03-24-2003, 09:16 PM
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Benötigt Mehr Druck!
Join Date: Aug 2002
Posts: 1,855
My 83 has all three of those symptoms (flare goes away when warm). I just need to take the time to adjust everything correctly. I know my regulating valve (the one on the IP) doesn't have the range it should have.

What changes did you make to the system?

Jeff M.
Mercedes W123 DIY pages are now located here.
1983 / 1984 300D Sold
2000 CLK430 Cabriolet ~58k Sold
2005 Avalanche 4x4 ~66k
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