VLOG - Mercedes 300SD W126 - OM617 Vacuum Routing Without EGR - Plus Viewer Appreciation Time !! 

Very well explained Impalaman, much appreciated.!

Thank you for posting this. It allowed me to simplify the vacuum system as well as alleviate (possibly cure!) a poor shifting syndrome my 84 had (shifts up very quick but refuses to kick down for more power). At the very least it is no longer polluting my intake with soot!

Really enjoy your videos . Thanks for guiding us to keep our Benz alive and running in top shape . I started driving my 1983 300SD daily now . Really enjoy driving it better thank my 2021 Corolla . Could you do a diy for a couple overhaul of the AC unit . I am planing replacing all hoses , compressor, sensors and everything associated with the cooling system. Thanks Mr. Impalaman !!

Looking forward to the intake clean out video. That should be interesting. Thanks for the info on the EGR delete.

Wow! Next day service even. You can't beat that. I'll be deleting all of that this morning while replacing the a/c compressor. My project is almost complete. Your videos have been an incredible help. Thank you and death wish coffee for making this project come together.

Awsome!

Thanks for the video. This helps alot

As these cars are getting older, the lesser vacuum hoses it has the better. 👍

Great info, nice custom socket from the viewer...good stuff

this video has helped me immensely i appreciate the info!

I just picked up a 1982 300sd. Obviously it's got vacuum issues so hard shifting and vacuum leaks everywhere. Thank you for the egr delete walk-through. I'll be deleting mine asap.

Thanks , good info, awesome

Hi Mike. I never had any problems with my vacuum system on my 300d so I never messed with it. But noticing the double fire wall on your S class, I remembered a friend had a 300sd and I drove it once. That double firewall makes such a difference in the noise level inside the cabin compared to the E class without that. I also remember trying to use the cruise control and after a bit the throttle stopped responding. So I pulled over and discovered one of the c clips had come off. I reset the linkage hoping it would stay on but it came apart again. So I had to stop and reset it. As long as I did not use the cruise control it would work just fine. I think I did use a paper clip on it to help and later got the c clip for it. So watch those c clips on all that linkage!

11:36 I believe that line is for the vacuum shut-off valve so that the engine will stop when you turn it off with the key.

Mike I did the same thing to my car, but am having issues with shift quality now. I will be putting back the valve for the vacuum bleed down and supply to the transmission. I’ve done more reading and that valve is necessary for proper vacuum to the transmission.

I did the same thing.

I did the egr and alda delete on my 82 300sd w126 and wow what a difference. It accelerates like a gas car now, feels more powerful. But my shifting is kind of rough. Is yours like that? Anyway to fix?.

Where did you get that pdf of the vacuum diagram and do you have others for the Mercedes diesel specifically the W123. Thanks

If my EGR is still hooked up but unable to hold vacuum, would that leak cause shifting issues and a delayed engine shut down? Or is it on a different part of the vacuum diagram? Great videos!

AT the 13:20 you say you replaced the funny looking connector with a tee..I really do not see how that would make any difference, a tee connector and the funny looking one all have 3 branches..so really what would the difference be? I just bought on of these and am trying to do this egr delete so any help would be really appreciated.

Would it be theoretically possible to route everything like you did without physically removing the EGR and thus just disabled it. The Valve should be shut on the egr anyway so without any vaccume supply, shouldn't it remain shut. I'd prefer to leave mine on if there was a way to disable it instead of doing the full delete? Thanks for all the videos! I've been watching many of them since getting my 84 W126.

Have you replaced your vacuum lines? If so, wheres a good place to buy quality line and tees?

From 1979 thru 86, a truly idiotic progression of unreliably stupid complications !!