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  #1  
Old 03-23-2010, 05:46 AM
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Join Date: May 2009
Location: Salt Lake City, UT
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Question 1985 300sd vacuum system

Ok so i have been going through the vacuum diagrams in order to fix my rough shifting and I am pretty sure my 1985 300 SD vacuum system matches that of the California version cars. But i do not believe i have a California car as I am pretty sure there is no trap oxidizer. Am I misinformed on what the trap oxidizer looks like? Is it possible that the PO has removed the trap oxidizer and i do infact have a california car. or am i missing some vacuum diagrams . The reason I say my car matches the california diagrams is i have the blue vacuum transducer and the boost aneroid valve.

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  #2  
Old 03-23-2010, 06:41 AM
oldsinner111's Avatar
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Location: Elizabethton, TN
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Use the resources button,I believe theres a picture showing the 2 different manifolds.As far as vac leaks,my S lines under black box on rocker cover had rotted,and tits.So I ran one line to green dashpot to trans valve on IP from there to transmission.The bottom of the trans valve is a vent that goes to a line you can blow thru.I disabled all other lines,EGR,Thermo valve,ect.
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  #3  
Old 03-23-2010, 01:27 PM
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Quote:
Originally Posted by oldsinner111 View Post
Use the resources button,I believe theres a picture showing the 2 different manifolds.As far as vac leaks,my S lines under black box on rocker cover had rotted,and tits.So I ran one line to green dashpot to trans valve on IP from there to transmission.The bottom of the trans valve is a vent that goes to a line you can blow thru.I disabled all other lines,EGR,Thermo valve,ect.
My car doesn't have the 3-2 valves on the valve cover. EGR and apv have been disabled already.
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1987 300D 180k
1985 300SD 330k Helga
1992 300D Lola 269k- Sold
1986 325 coupe Bessie >300k Original engine(ODO Broke) sold
2006 2500HD Druamax Linda- Tows boat and looks pretty in garage thats about it
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  #4  
Old 03-23-2010, 02:02 PM
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Location: Central California
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The '85 Cali version vacuum system is the same as the '85 Federal.

Here a diagram that will help you.






.
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  #5  
Old 03-23-2010, 08:39 PM
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The Ca. version will have the air filter housing mounted behind the R/F headlight on both the W123 and W126.

Charlie

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