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#1
01-11-2007, 03:16 PM
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Vacuum Valve??
What is the function of this vacuum valve?? My bud has one like this on his 300CD but on the other side down by the filter-drier.
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--------------------------- No matter how many times you explain it to me, I'm still right.....Surf-n-Turf 
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#2
01-11-2007, 03:22 PM
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Which vac valve would you be referring to?
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1989 300E 144K
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#3
01-11-2007, 03:22 PM
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Probably help if I posted the pic, huh?
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--------------------------- No matter how many times you explain it to me, I'm still right.....Surf-n-Turf
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#4
01-11-2007, 03:22 PM
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What vacuum valve?
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1979 240D- 316K miles - VGT Turbo, Intercooler, Stick Shift, Many Other Mods - Daily Driver 1982 300SD - 232K miles - Wife's Daily Driver 1986 560SL - Wife's red speed machine
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#5
01-11-2007, 07:29 PM
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Some of the older 123's have a cruise control gadget that was vac operated. It could be that.
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Andrew '04 Jetta TDI Wagon  '82 300TD ~ Winnie ~ Sold '77 300D ~ Sold
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#6
01-11-2007, 07:54 PM
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Answer
This is on your W123 1984 300D turbo.
 Vacuum Diagrams W123 and W126 models Vacuum Diagrams That should be your Pressure Converter, #84 in the picture. http://home.comcast.net/~phantoms/vacuum/engine2.jpg Have a great day.
__________________
ASE Master Mechanic asemastermechanic@juno.com Prototype R&D/testing: Thermal & Aerodynamic System Engineering (TASE) Senior vehicle instrumentation technician. Noise Vibration and Harshness (NVH). Dynamometer. Heat exchanger durability. HV-A/C Climate Control. Vehicle build. Fleet Durability Technical Quality Auditor. Automotive Technical Writer 1985 300SD 1983 300D 1984 190D 2003 Volvo V70 2002 Honda Civic https://www.boldegoist.com/
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