What does this do and If I'm missing vacuum lines, can I have a vacuum diagram?

190d w201 M/T 2.2L

thanks

Looks like the vacuum control unit for the pressure control flap (he says with an air of authority as if he knows what it is...)

See =>

http://www.startekinfo.com/StarTek/outside/11832/Resources/201Create/PDF/60009.pdf

Page 4

Takes a long time to download - might not work on a mobile swipe thingy

__________________
1992 W201 190E 1.8 171,000 km - Daily driver
1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone
1965 Land Rover Series 2a Station Wagon CIS recovery therapy!
1961 Volvo PV544 Bare metal rat rod-ish thing

I'm here to chat about cars and to help others - I'm not here "to always be right" like an internet warrior



Don't leave that there - I'll take it to bits!

Yep, it's the vacuum actuator for the air box. The inside of the air box is closed off mostly by a metal plate. The small hole is covered by a flap that closes off the small hole to create a vacuum in the diesel intake system. It's so that the engine can draw in EGR gas effectively. The vac line goes to the EGR vac circuit. If you leave it unplugged, the engine won't draw in EGR gases very effectively.

__________________
'84 190D 2.2 5MT (Red/Palomino) Current car. Love it!
'85 190D 2.2 Auto *Cali* (Blue/Blue) *sold*
http://badges.fuelly.com/images/sig-us/302601.png
http://i959.photobucket.com/albums/a...0/sideview.png

If The EGR is deleted, do I still need this to work?

Nope. If the EGR isn't functional, there's no reason to restrict the engine's intake of air.

__________________
'84 190D 2.2 5MT (Red/Palomino) Current car. Love it!
'85 190D 2.2 Auto *Cali* (Blue/Blue) *sold*
http://badges.fuelly.com/images/sig-us/302601.png
http://i959.photobucket.com/albums/a...0/sideview.png

Got it. thank you!