1995 E320 part question
 

What exactly is p/n 001 140 80 60 and what does it do. I emailed Phil and the only description he had said "valve" It looks like some kind of vacuum control type of solenoid valve because it has vacuum lines in/out of it with some wires. On occasion I hear it "clicking" - turning on/off, especially when cold. Car runs fine with not codes/problems.

Where is it located?

It is close to the ABS controller, kinda behind it - between the controller and the engine - obviously on the drivers side.
thanks

This part is the Purge Switch-Over Valve.
It is controlled by the engine ECU .
When energized, it draws fuel vapors from the charcoal canister
into the intake for burning.
Part of the emission system and it will bring up a code 21 on your Led/sw diagnostic socket next to the battery when it fails to operate.

Thanks Arthur.