On passenger side, in front of coolant tank. Vacuum hose was broken, so
I replaced it. Didn't notice any differance how the car ran. Maybe someone could tell me what it is and does. It is in center of picture.

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Thanks


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1984 MB 300 SD Turbo

Vacuum switch-over valve for air recric valve on turbo.
Must be a California version.

Allows air to intake to be blocked in order to have more EGR gases into the engine

__________________
MERCEDES Benz Master Guild Technician (6 TIMES)
ASE Master Technician
Mercedes Benz Star Technician (2 times)
44 years foreign automotive repair
27 Years M.B. Shop foreman (dealer)
MB technical information Specialist (15 years)
190E 2.3 16V ITS SCCA race car (sold)
1986 190E 2.3 16V 2.5 (sold)
Retired Moderator

my federal has it.

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1985 300D Mango Green with 16" Pentas, Vogtland springs, Euros/ clear corners, 234k, lots to come soon....

Some things on the OM617 that were on the Cali models for '84 found thier way onto the Fed '85.

__________________
RRGrassi


70's Southern Pacific #5608 Fairmont A-4 MOW car

13 VW JSW 2.0 TDI 193K, Tuned with DPF and EGR Delete.

91 W124 300D Turbo replaced, Pressure W/G actuator installed. 210K

90 Dodge D250 5.9 Cummins/5 speed. 400K