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#1
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What is this valve?
Hello All,
I was looking under the hood of my some what newly accuired '83 300sd and noticed this vaccuum valve was abandoned. As you can se one hose was removed and the other cut off. I am wondering what it is and how its used.
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1990 420SEL 1995 E320 Coupe 2000 SL500 2009 ML320 |
#2
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pic?
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1985 300TD Turbo Euro-wagon 1979 280CE 225,200 miles 1985 300D Turbo 264,000 miles 1976 240D 190,000 miles 1979 300TD 220,000 GONE but not forgotten 1976 300D 195,300 miles 1983 300D Turbo 175,000 miles http://i42.photobucket.com/albums/e3...e485-1-2-1.jpg |
#3
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So, about that "as you can see" part of your message.......
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Jimmy L. '05 Acura TL 6MT 2001 ML430 My Spare Gone: '95 E300 188K "Batmobile" Texas Unfriendly Black '85 300TD 235K "The Wagon" Texas Friendly White '80 240D 154K "China" Scar engine installed '81 300TD 240K "Smash" '80 240D 230K "The Squash" '81 240D 293K"Scar" Rear ended harder than Elton John |
#4
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If you are having technical difficulties with pictures, a general desrciption will probably work. Odds are, it's the EGR control valve (if on the valve cover) or the boost protection switchover valve (between the intake manifold and ALDA.) The latter is not a vacuum valve, but it looks like one.
Last edited by tangofox007; 08-15-2008 at 05:49 PM. |
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oh you mean this one?:
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1981 300SD 512k OM603 |
#6
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Sorry about the picture.
The valve is located on the firewall near the brake booster. It has an electrical connection and two places for hoses, I'm assuming vacuum.
I'm sorry I haven't figured out how to attach an image.
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1990 420SEL 1995 E320 Coupe 2000 SL500 2009 ML320 |
#7
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Sounds like the over boost protection solenoid. I can't remember off the top of my head where the two lines go maybe someone else can chime in.
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Andrew '04 Jetta TDI Wagon '82 300TD ~ Winnie ~ Sold '77 300D ~ Sold
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#8
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Picture IN My Gallery 300CE
I uploaded a picture IN My Galleryunder 300CE.
Thak you for you help.
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1990 420SEL 1995 E320 Coupe 2000 SL500 2009 ML320 |
#9
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No, it's not vacuum. Pressure from the intake manifold is "transmitted" through the valve to the ALDA to allow for proper fuel delivery. The valve itself is a safety feature to prevent overboost. If the line from the manifold to the ALDA is not connected, you are going to think you got a new engine when you hook things back up. If the valve has just been bypassed, it would be a real good idea to restore things to the proper configuration.
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#10
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http://www.dieselgiant.com/mercedesaldaboostsystemservi.htm
this link says it all!
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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread "as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do! My drivers: 1987 190D 2.5Turbo 1987 190D 2.5Turbo 1987 190D 2.5-5SPEED!!! 1987 300TD 1987 300TD 1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere! |
#11
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Thnak you
VSTECH and ALL
Thank you. Ron
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1990 420SEL 1995 E320 Coupe 2000 SL500 2009 ML320 |
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