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#1
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servo problem
Last weekend I removed my servo and performed a bypass to get some heat in the cabin of my 1980 300SD. I had a vaccuum leak somewhere that kept the engine from stopping, so I re-attached the servo in the hopes that would fix it (didn't, so I'm now looking for leaks and vacuum line locally).
When I put the servo back in, it wouldn't turn on any of the air controls in the cabin. Push a button and it is like it's still taken out. Any ideas where to start? Thanks, Dunl
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79 300SD - $50 out of pocket purchase 03 Dodge Ram 3500 CTD 2003 VW Jetta TDI |
#2
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it controls all of your climate control pods.......it don't work nothing else will work either.....sorry, you want it to work right thats the only option you have....you did notice the mass of vacuum lines that plug into the top.....thats why.
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Proud owner of .... 1971 280SE W108 1979 300SD W116 1983 300D W123 1975 Ironhead Sportster chopper 1987 GMC 3/4 ton 4X4 Diesel 1989 Honda Civic (Heavily modified) --------------------- Section 609 MVAC Certified --------------------- "He who fights with monsters might take care lest he thereby become a monster. And if you gaze for long into an abyss, the abyss gazes also into you." - Friedrich Nietzsche |
#3
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I believe the reason its not working even though it is plugged back in is the vacuum leak. I suspect that once you trace down the vacuum leak, you'll get back some control from the servo.
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1977 300d 70k--sold 08 1985 300TD 185k+ 1984 307d 126k--sold 8/03 1985 409d 65k--sold 06 1984 300SD 315k--daughter's car 1979 300SD 122k--sold 2/11 1999 Fuso FG Expedition Camper 1993 GMC Sierra 6.5 TD 4x4 1982 Bluebird Wanderlodge CAT 3208--Sold 2/13 |
#4
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Seems more electrical, though. I have a bypass switch to control the blower, and when I pressed any of the other controls, I used to have air blowing, but not heat. Now when I press them, the blower turns completely off?
Weird.
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79 300SD - $50 out of pocket purchase 03 Dodge Ram 3500 CTD 2003 VW Jetta TDI |
#5
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I believe the electrical and vacuum controls are correlated in the servo.
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1977 300d 70k--sold 08 1985 300TD 185k+ 1984 307d 126k--sold 8/03 1985 409d 65k--sold 06 1984 300SD 315k--daughter's car 1979 300SD 122k--sold 2/11 1999 Fuso FG Expedition Camper 1993 GMC Sierra 6.5 TD 4x4 1982 Bluebird Wanderlodge CAT 3208--Sold 2/13 |
#6
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Okay, thanks.
Now, just need to find some vacuum line locally.
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79 300SD - $50 out of pocket purchase 03 Dodge Ram 3500 CTD 2003 VW Jetta TDI |
#7
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Proud owner of .... 1971 280SE W108 1979 300SD W116 1983 300D W123 1975 Ironhead Sportster chopper 1987 GMC 3/4 ton 4X4 Diesel 1989 Honda Civic (Heavily modified) --------------------- Section 609 MVAC Certified --------------------- "He who fights with monsters might take care lest he thereby become a monster. And if you gaze for long into an abyss, the abyss gazes also into you." - Friedrich Nietzsche |
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Manuel
I have a copy. anything in particular?
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#9
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Yes that servo set-up is very evil indeed. To bad Mercedes could not see the wisdom in using the manual system like on the 240d.
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1981 300D 147k 1998 VW Jetta Tdi 320k 2001 Dodge Ram 2500 141k 1979 300D 234k (sold) 1984 300D "Astor" 262k(sold) Mercedes How-To and Repair Pictorials I love the smell of diesel smoke in my hair |
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