Hello, I'm just working on a new to me 320TE with the M104 Engine, I found this red vacuum line unplugged but can't see anywhere obvious where it should go- anyone know? Cheers.

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1993 320TE M104
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past:

1983 230E W123 M102
1994 E300D S124 OM606 (x2)
1967 250SE W108 M129
1972 280se 3.5 W108 M116
1980 280SE W116 M110
1980 350SE W116 M116
1992 300E W124 M103
1994 E280 W124 M104
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"music and women I cannot but give way to, whatever my business" -Pepys

It may go to an AIR shutoff valve below the AIR pump.

Thanks, I could see a line already connected to the air pump but no other place for this one to plug in, I'll have another look underneath later.

__________________
1993 320TE M104
---------------------------------------------------
past:

1983 230E W123 M102
1994 E300D S124 OM606 (x2)
1967 250SE W108 M129
1972 280se 3.5 W108 M116
1980 280SE W116 M110
1980 350SE W116 M116
1992 300E W124 M103
1994 E280 W124 M104
----------------------------------------------
"music and women I cannot but give way to, whatever my business" -Pepys

mine it runs to the egr looking device on exhaust manifold.But I don't use it,it only works for a few minutes when engine is cold anyway.No performance issue,if not connected.You may get a p code.Just block off vac line from intake.

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1999 w140, quit voting to old, and to old to fight, a god damned veteran, deutschland deutschland uber alles uber alles in der welt

Piggybacking on an older thread here...

Does someone have a pic showing how the blue/white hard vacuum line is routed from the intake manifold area to the connection at the front of the engine?

I disconnected it while changing out my drive belt and now it is coming up short by several inches. I don't think it broke, but no matter how I route it I can't get it to reach all the way back to the connector on the engine front.