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#1
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Mystery Hose
Hi folks!
This is my first post on this site although I have used the site for information for some time. I have discovered a hose under the glove box of my '83 300D which is detached on one end. It is about the same size as compressor hose (see pic). It is semi-ridgid and has vacuum when the compressor is engaged. If anyone has any ideas, please post. Thanks, Brian |
#2
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Isn't that the supply hose for the cabin air temp sensor? If so, it looks like you're missing the foam piece that connects it and the sensor on the dash. I just used some foam pipe insulation to replace the original foam on my car because it was crumbing.
__________________
Seth 1984 300D 225K 1985 300D Donor body 1985 300D Turbo 165K. Totaled. Donor Engine. It runs!!! 1980 300SD 311K My New Baby. 1979 BMW 633csi 62K+++? Dead odo |
#3
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Quote:
I agree, make sure it's got the foam connection. Jim
__________________
14 E250 BlueTEC black. 45k miles 95 E320 Cabriolet Emerald green 66k miles 94 E320 Cabriolet Emerald green 152k miles 85 300TD 4 spd man, euro bumpers and lights, 15" Pentas dark blue 274k miles |
#4
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Sailor is right. If you look back towards the left you will see a fitting directly below that little grill in the middle of the dash. What happens, is the foam connecter piece turns into dust.
The little grill covers an air temp sensor. In order to get a accurate realtime number, Mercedes uses that hose to draw air across the sensor. Otherwise it would be reading the same stagnant air that happens to waft past the sensor.
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Adam Lumsden (83) 300D Vice-President of the MBCA International Stars Section |
#5
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Foam connector
Thank you all for the quick responses. When I discovered this hose I suspected what you have told me, i.e., that it is a sampling hose. However, a couple of things bothered me:
1) The hose is large and relatively heavy. 2) The hose has no bends and doesn't seem to have an obvious "path" to go north to the sampling vent on the dash. What does the connector look like? Where will I find it (or where it's supposed to be located?) Brian |
#6
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heavy?... might be a a/c expansion valve hose...
__________________
Have you ever noticed that anybody driving slower than you is an idiot, and anyone going faster than you is a maniac? As long as they would add one additional commandment for you to keep thy religion to thyself. George Carlin (Wonder where he is now..) 1981 240d (engine donor 1983 240d) recently rebuilt engine hurray! - No more.. fought a tree and the tree won. pearl black 1983 240d 4speed (Converted!@$$%) atleast the tranny was rebuilt. |
#7
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Mystery hose
I don't know anything about expansion hoses. I am more inclined to go with the aspiration hose argument. I would really like to know more about the foam connector. What does it look like? Where does it attach? Thanks
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#8
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Foam connectors
Anyone?
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#9
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Look just above your center vents, between the two of them. On this area of the dash you'll see a little 1" by 1" square with vents in it. Attached to this little square, underneath the dash is an L-shaped tube that comes down and goes to the right. Its connected to the house you have pictured by a piece of foam that, over time, disintegrates.
Basically, stick your face in that hole where the glove box should be, look left, and you should see another hose with nothing connected two it. Attach two said hoses with something of an equivalent diameter (foam pipe insulation, rubber hose, etc.) and you're good to go. I bet your climate control will function a lot better with those hoses connected.
__________________
Seth 1984 300D 225K 1985 300D Donor body 1985 300D Turbo 165K. Totaled. Donor Engine. It runs!!! 1980 300SD 311K My New Baby. 1979 BMW 633csi 62K+++? Dead odo |
#10
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That is your air sensor hose. The right end of the hose is connected to the fan base so it draws air over the sensor in the center of the dash. It is connected to the sensor by a foam tube. I replaced mine with a plastic tube.
See the attached post for information. AC temp sensor FOAM tube?? Dave
__________________
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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