What is this called, it is the source of my car whinning. I have been looking for this noise for a long time. Something to do with vacuum?

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Vacuum check valve.....

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Jimmy L.
'05 Acura TL 6MT
2001 ML430 My Spare

Gone:
'95 E300 188K "Batmobile" Texas Unfriendly Black
'85 300TD 235K "The Wagon" Texas Friendly White
'80 240D 154K "China" Scar engine installed
'81 300TD 240K "Smash"
'80 240D 230K "The Squash"
'81 240D 293K"Scar" Rear ended harder than Elton John

Looks like one of the EGR vacuum check valves. I got rid of all of mine and plugged the lines.

__________________
-diesel is not just a fuel, its a way of life-
'15 GLK250 Bluetec 118k - mine - (OC-123,800)
'17 Metris(VITO!) - 37k - wifes (OC-41k)
'09 Sprinter 3500 Winnebago View - 62k (OC - 67k)
'13 ML350 Bluetec - 95k - dad's (OC-98k)
'01 SL500 - 103k(km) - dad's (OC-110,000km)
'16 E400 4matic Sedan - 148k - Brothers (OC-155k)

My car does not have a egr valve on it, it is right by the brake booster.
Look at the second picture you can see the abs booster.

Where would I get one? Do they sell them here on this site? What would cause it to go bad? Sorry for all the ?s

Serves as a purge valve for the vac line coming off the thermo valve on the cylinder head and eventually ending up at the throttle housing. I believe the correct part number is 107-470-08-93, but you should confirm with the dealer or Internet vendor.

__________________
1988 California version 260E (W124)
Anthracite Grey/Palomino
Owned since new and still going strong and smooth
MBCA member

Past Mercedes-Benz:
1986 190E Baby Benz
1967 230 Inherited from mom when she downsized
1959 220S Introduced me to the joys of keepin' 'em goin'

There are only 10 kinds of people in the world--those who understand binary and those who don't

Thankyou.