I've been trying to diagnosis where the vacuum leak in my 240D is because the door locks aren't working, the engine won't shut off and I feel like the transmission is shifting rough from it. I used a vacuum pump tester and circled the line that wasnt holding vacuum. I was wondering what this line does and if it's possible to just plug off with a golf tee or something so I can at least shut off my engine when I turn the key. I don't have a diagram so I'm not sure what the line does. It's on...
1979 240D vacuum diagram
1979 240D vacuum diagram
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