Vacuum line to shut off 190d 2.2 plus ?? - PeachParts Mercedes-Benz Forum

snorider · #1 11-02-2012, 08:02 PM

I have resealed my injection pump on my "new" 190d and replaced the ignition switch and steering lock assemblies, and it now starts great, runs a bit rough at idle but I have a feeling an italian tune up will help that. The biggest problem now is the the car will not shut off. I see the nipple for what I assume is the shut off at the top of the IP is missing a line. does anyone have a photo of properly routed vacuum lines to the shut off. I have vacuum to the shut off switch at the ignition but I do not know where the line goes from there. The line was missing when I bought the car. He was using the shut off lever: part of the reason it was 600$. The car only has 160k on it and drives very well but I want to set it to rights.

And now the questions... what type of pin/ bolt is used to hold the AT kick down onto the bracket? I will guess it is not the zip tie holding it now. And finally what size vac line runs to the brake booster. The po used a piece 1/2 inch of fuel line and some hose clamps.
Thanks

snorider · #2 11-02-2012, 09:06 PM

I just checked the vac switch at the steering lock and there is vacuum to both lines. I should be able to figure it out by pulling lines under the intake. Too dark for driveway wrenching tonight so I'll try again tomorrow morning.

I love google here is the vacuum diagram for a 1985 190d 2.2

Bob338 · #3 11-03-2012, 08:09 AM

It's fairly common with your symptom for #6 in in the diagram, to fail. Check the line between your switch and that shut off valve. If its connected, at shut off vacuum goes to it from the ignition switch. It's fairly simple to replace.

snorider · #4 11-03-2012, 01:14 PM

It shuts down with the key and it idles fine now! The PO had the the idle control y22 line 61a open and the brown/blue line to 6 attached to the white supply. The glow system works great as well, I started it this morning at 29f and it fired instantly. Now I just have to put it all back together. Bit too early for a beer, think I'll have another cup of coffee.
Cheers

pawoSD · #5 11-03-2012, 04:33 PM

Amazing that this diagram appears AFTER I finished my swap project.

I vastly simplified the vac system on mine, just a line from the small port on vac pump to a splitter that goes to a check valve with the klima and high-idle on the injection pump, and another that goes to the shutoff and transmission shifting valve. Then the usual line to the booster. My shutoff is with an electric switchover valve. Power = closed to vac, no power = open and vac flow.