Hey, I have a vacuum problem. Well, when I first got the car, the vacuum would run out overnight and the doors would not automatically unlock in the morning. So first I replaced the master vacuum switch in the driver's door. This made it so my locks would work up to after 2-3 nights of the car not being used.

I decided to replace the 3-way vacuum door valve because it's a cheap part and it seems to be a likely culprit for the problem I was having.

I also decided that at the same time I'd clean up the vacuum lines because the previous owner had removed the EGR (I believe using Brian's kit) but had left the vacuum lines to the black box on top the engine. So I removed the two three-way vacuum connectors and replaced them as per Brian's instructions. I also changed out a bunch of the rubber vacuum hose pieces with new hose while I was at it.

Unfortunately, this worsened the vacuum leak. Now it drains out in one night again.

So here are some photos to check out to see if my set up is all correct. Any advice would be greatly appreciated.

Ok, so in image #1, you can see the EGR is no longer there. There is that vacuum line (labeled #1) which has been fed back into itself. Should that even be there anymore?? And also look at the black box (labeled #2) which has no vacuum lines anymore.

In image #2, here is where all the work was done. As you can see, I removed one of the 3-way connectors are added a piece of vacuum hose (labeled C). I left that brown orifice (labeled B) on there as I read another thread saying it should remain there.

Vacuum hose piece (labeled H) used to be a 3-way connector.

G is the 4-way connector that the 3-way door valve connects to.

D and E (new vacuum hose) connect to line F. I noticed that in the schematics I've seen and in other people's photos, that D and E are reversed on mine in regards to where they connect to line F. I tried switching them and that was no good, as my engine didn't want to shut off. So I switched them back to the way they were.

Is there a chance that I messed up something behind the firewall when I was connecting the door valve? I had to pull on the yellow plastic vacuum lines in order to hold them tight. I tried to look in there but I couldn't see where the yellow lines go to. I saw them come out the firewall and I know they eventually make their way to the driver's door, but couldn't follow them from the wall to the door.

Could the problem be the 3-way and 4-way connectors I have left? Since I removed the plastic lines from them, maybe they're too stretched out now??

Ok, any advice would be great. I don't have a MityVac yet. I first wanted to make sure I have all the lines connected properly.

By the way, with the set up as in right now, once the car is on, everything seems fine. Door locks work, transmission seems to shift smooth, brakes work, A/C works.

Thanks,
David

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1985 300D. 179,000 miles.