Vaccume Hose loose Whats the danger? - Mercedes-Benz Forum

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post #1 of 2 (permalink) Old 06-09-2010, 10:36 AM Thread Starter
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Vehicle: 93 Mercedes Benz 190E 2.6
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Unhappy Vaccume Hose loose Whats the danger?

I was driving one day last week and I noticed out of the blue that when I stopped at a light my benz began to shake a little at just sitting still. When i got home I noticed one of my vaccume lines was hanging off. problem is no one knows where it goes. Please help. Also I have a check engine light that jumped on. There goes my smooth idle. does anyone know or have experienced this problem? Oh yeah I also noticed this tube comming from the firewall I know the guy that sold me the benz Un hooked the heater core cause it was leaking I assume this is the othe end?. The vaccume hose is pictured on the left It's the third one to the right the other end I put a screw in till I find out where it goes.
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post #2 of 2 (permalink) Old 06-10-2010, 08:58 AM
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The vacuum controls on this cars play the same role what computers on newer do.
Disconnected tubing disables a sensor or a control and that is what affects the engine.
Some manual do have vacuum system diagrams. Sometimes there is a label under the hood. I have similar dilemma where PO bypassed a sensor hanging on the firewall. Can't find what this is for, but the engine runs fine, so I am not worry. Assuming the bypassed sensor is bad I hesitate to reconnect it, especially not knowing how it goes.
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