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#1
09-01-2009, 08:00 PM
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Pressure Converter Valve..what is it?
85 300TD
I was replacing the rubber vac lines today, car does not really want to shut off and door locks dont work, and came across a "Pressure Converter Valve". I only know the name because I searched the part number, 001 540 74 97, on allparts. I did a search and found nothing.. I am guessing it's known as something else but I have no idea. I would like to know what its really called, what it does and how to test it. Currently I have some hard shifting and perhaps the turbo is inop. Thanks
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08 R320 CDI current Past 95 E420 87 300D Turbo 5spd 90 300TE 83 300SD 85 300TD 92 400E 85 190D 
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#2
09-01-2009, 08:03 PM
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PS...
I had NO idea that oil came out of the oil pressure line when detached from the speedo. I guess I never gave it much thought. This is the first w123 I have had. Had the speedo out to track down vac lines. I covered the steering wheel and myself in oil. 
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08 R320 CDI current Past 95 E420 87 300D Turbo 5spd 90 300TE 83 300SD 85 300TD 92 400E 85 190D
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#3
09-01-2009, 08:42 PM
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http://www.allpartsexpress.com/item.wws?sku=MBZ063833&itempk=56490&mfr=Genuine&weight=0.55
This thing might be a pressure converter valve
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08 R320 CDI current Past 95 E420 87 300D Turbo 5spd 90 300TE 83 300SD 85 300TD 92 400E 85 190D
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#4
09-02-2009, 09:26 AM
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Not sure what that part is, can't find it with a quick search.
Usually with a difficult shutting down problem, it's a vac leak somewhere in the system, door locks. You'll need a Mity-Vac or something similar to test a number of items. Including the vac pump, this can give you all kinds of trouble if it's failing.
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83 SD 84 CD
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#5
09-02-2009, 09:57 AM
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thats for the 606 engine.
if you cant shut the car off with the key you have a vacuum leak somewhere
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1986 300SDL, 211K,Dealership serviced its whole life 1991 190E 2.6(120k) 1983 300D(300k) 1977 300D(211k)
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