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#16
03-01-2011, 08:25 PM
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Maybe.
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83 SD 84 CD 
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#17
03-01-2011, 08:30 PM
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I blocked off this vacuum line and it works.
It is a 300D and should be similar. I removed the green line at the T and blocked it. It is simple and worth a try.
http://www.peachparts.com/shopforum/attachments/diesel-discussion/75518d1261527820-300d-will-not-shut-off-unless-i-blocked-line-300d-vacuum.jpg
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Not MBZ nor A/C trained professional but a die-hard DIY and green engineer. Use the info at your own peril. Picked up 2 Infractions because of disagreements. NOW reversed.  W124 Keyless remote, PM for details. http://www.peachparts.com/shopforum/mercedes-used-parts-sale-wanted/334620-fs-w124-chasis-keyless-remote-%2450-shipped.html 1 X 2006 CDI 1 x 87 300SDL 1 x 87 300D 1 x 87 300TDT wagon 1 x 83 300D 1 x 84 190D ( 5 sp ) - All R134 converted + keyless entry.
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#18
03-02-2011, 01:36 AM
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Question
Quote:
Attached is the correct routing to/from the shutoff valve. The inner valve leg vents in the run position..
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#19
03-02-2011, 01:39 AM
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Ummm
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#20
03-02-2011, 02:23 AM
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Quote:
__________________
Not MBZ nor A/C trained professional but a die-hard DIY and green engineer. Use the info at your own peril. Picked up 2 Infractions because of disagreements. NOW reversed. W124 Keyless remote, PM for details. http://www.peachparts.com/shopforum/mercedes-used-parts-sale-wanted/334620-fs-w124-chasis-keyless-remote-%2450-shipped.html 1 X 2006 CDI 1 x 87 300SDL 1 x 87 300D 1 x 87 300TDT wagon 1 x 83 300D 1 x 84 190D ( 5 sp ) - All R134 converted + keyless entry.
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#21
03-02-2011, 02:34 AM
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OK
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#22
03-02-2011, 04:16 AM
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A simple test for the bigger bits in the vacuum system is to get someone to pump the brakes with the engine off and then just listen for escaping air. I noticed a leaking master brake cylinder to brake booster seal that way - and a leaky diaphragm on the vacuum pump...
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1992 W201 190E 1.8 171,000 km - Daily driver 1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone 1965 Land Rover Series 2a Station Wagon CIS recovery therapy! 1961 Volvo PV544 Bare metal rat rod-ish thing I'm here to chat about cars and to help others - I'm not here "to always be right" like an internet warrior  Don't leave that there - I'll take it to bits!
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#23
03-02-2011, 09:09 AM
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Quote:
He pulled vac with the engine off, key in the off position, from the brown line under hood and had his thumb on the end of the brown/violet line at the shut off actuator, he felt vacuum. When he did the same procedure as above with the engine running, key in the off position and the brown/violet line connected to the shut off actuator, the engine shut off. It may be this weekend before he can make a video. Thanks for all the suggestions.
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83 SD 84 CD
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#24
03-02-2011, 09:16 AM
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Remember, that if all else fails, God made the lungs suck (in men at least) to turn off Mercedes diesels. Run a vacuum hose into the passenger compartment from the shut off valve. 2 or 3 quick sucks and she's off.
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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
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#25
03-02-2011, 10:02 AM
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Is he getting the same vac value at the shut off valve as what he is applying to make it shut off manually? After I modded my pump I found that it took another gasket thickness on the shutoff valve to get it to shut down quickly.
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http://superturbodiesel.com/images/sig.04.10.jpg 1995 E420 Schwarz 1995 E300 Weiss #1987 300D Sturmmachine #1991 300D Nearly Perfect #1994 E320 Cabriolet #1995 E320 Touring #1985 300D Sedan OBK #42
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#26
03-02-2011, 10:18 AM
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^ That was going to be the next test, it got late.
kerry, I have mentioned that, but we should be able to get this right.
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83 SD 84 CD
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#27
03-02-2011, 05:42 PM
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Partial success. It's back the way it was, it does shut off, but takes 6 seconds.
This was accomplished by swapping the the hoses on the main vac line and plugging off the green/yellow line. This is a going to be a separate problem. The other barb on the main line now goes to the black box on the cam cover and eventually to the transmission, from the side of the VCV. This set up is unknown to me and the manual shows only one barb at the main vac line, making diagnostics a challenge.
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83 SD 84 CD
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#28
03-04-2011, 09:29 PM
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He found someone at least enough familiar with the vac, egr set up, it's a California car, late production.
Got it rerouted and cleaned out the main vac line, shuts off immediately, shifts fine and the HVAC is working properly, he's a happy camper.
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83 SD 84 CD
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#29
03-04-2011, 11:08 PM
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Ah
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#30
03-05-2011, 07:32 AM
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So it would seem.
It looked stock to me, nothing seemingly out of place (except for the door lock system), no additional length added to any lines, but I'm not familiar with a California 240 automatic egr system. I've asked for pics, as he was not sure just what the mechanic did.
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83 SD 84 CD
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