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Old 04-04-2007, 06:05 PM
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Join Date: Dec 2005
Location: Minneapolis, MN
Posts: 144
what's this vacuum line for; 240D ?

i found a broken section of what seems like a black vacuum line that run behind the battery of my '82 240D. the line leads back towards the front of the car by the headlight. see pics. since it goes behind the battery and towards the interior, is it possible just to repair the broken section with some kind of splice ? or does the whole line have to be replaced.

my haynes & chilton manuals are on the way so i can't identify it yet. i'm guessing door locks ? my door locks still work, it takes about 2 seconds to fully extend. not sure if that's normal.
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what's this vacuum line for; 240D ?-vac-1.jpg   what's this vacuum line for; 240D ?-vac-2.jpg   what's this vacuum line for; 240D ?-vac-3.jpg  
1982 240D 4spd 232k (deceased)
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Old 04-04-2007, 06:08 PM
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The first arrow on the left is the EGR vacuum valve. The black tube is just a vent.

Last edited by ForcedInduction; 04-04-2007 at 06:14 PM.
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Old 04-04-2007, 06:10 PM
dmorrison's Avatar
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Join Date: Dec 2002
Location: Colleyville, Texas
Posts: 2,694
That's the air switch for the EGR. You can repair it by using a straight piece of tube that has a inner diameter the same as the outside of the plastic line. The line goes into the cabin and ends just hanging there so it gets "clean" air

1970 220D, owned 1980-1990
1980 240D, owned 1990-1992
1982 300TD, owned 1992-1993
1986 300SDL, owned 1993-2004
1999 E300, owned 1999-2003
1982 300TD, 213,880mi, owned since Nov 18, 1991- Aug 4, 2010 SOLD
1988 560SL, 100,000mi, owned since 1995
1965 Mustang Fastback Mileage Unknown(My sons)
1983 240D, 176,000mi (My daughers) owned since 2004
2007 Honda Accord EX-L I4 auto, the new daily driver
1985 300D 264,000mi Son's new daily driver.(sold)
2008 Hyundai Tiberon. Daughters new car
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