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  #1  
Old 12-17-2012, 04:39 PM
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vcv broken.

about a week ago the transmission on my 1987 300d started shifting really hard. I just got the car in the shop today to figure out why. I connected a vac gague teed into the line that goes to transmission pressure modulator. I found there was no vacuum. I then checked for vacuum at the vcv and found that there was no vacuum after the vcv but had vacuum before vcv. i took the vcv off the ip and applied vacuum to it manually with a mity vac it holds vacuum and will not release no matter how it is adjusted. has anyone ever seen this before? Does anyone have a good one they would like to sell me?
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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

Last edited by polarisrmk; 12-17-2012 at 07:01 PM.
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Old 12-17-2012, 06:18 PM
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Have you tried adjusting the VCV?
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Old 12-17-2012, 07:01 PM
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yes.... as stated no matter how i moved the vcv ajustment no vacuum comes out.

Quote:
Originally Posted by Govert View Post
Have you tried adjusting the VCV?
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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 12-19-2012, 12:11 AM
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Vcv is definitely not functioning
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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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  #5  
Old 12-19-2012, 06:16 PM
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VCV - 0 in Hg? 1985 300SD
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1985 300D 198K sold
1982 300D 202K
1989 300E 125K
1992 940T

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Old 12-19-2012, 11:50 PM
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Read through the previous link similar problem except I still have no vacuum to the trans modulator no matter how I adjust the vcv... Vacuum pump is brand new and vacuum to the vcv is good
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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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  #7  
Old 12-20-2012, 06:15 AM
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Quote:
Originally Posted by polarisrmk View Post
Read through the previous link similar problem except I still have no vacuum to the trans modulator no matter how I adjust the vcv... Vacuum pump is brand new and vacuum to the vcv is good
The VCV for the 1987 300D is clinched, making it difficult to repair, if it is possible at all. You can try two things:

- Spray brake cleaner (or similar) through it (after you have removed it from the engine) so that dirt is flushed out (be careful, brake cleaner is highly flammable). This only works if the VCV is dirty.

- Drill out the clinches and try to repair. You need bolts or new clinches to close it afterwards. I don't know if the VCV can be repaired, but you can try.
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  #8  
Old 12-20-2012, 12:11 PM
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i will try this.... does anyone have a spare they want to sell me?
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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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  #9  
Old 12-21-2012, 03:41 PM
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TOOK MY VCV APART VERY CAREFULLY TODAY AND IT IS COMPLETELY RUINED INSIDE. THERE IS A DIAPHRAGM THAT DISINTEGRATED AND CLOGED ALL THE CHECK VALVES AND PASSAGES INSIDE. SO I NEED A NEW ONE IT LOOKS LIKE.
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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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  #10  
Old 12-21-2012, 07:13 PM
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I got a vcv for you off a 1987 300 TDT I think I can dig up tonight and mail too you. PM me your address and when you get it and it works you can paypal me what you want.
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1975 300D, 1975 240D, 1985 300SD, 1997 300D, 2005 E320 , 2006 Toyota Prius
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  #11  
Old 12-26-2012, 03:54 PM
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Location: Salt Lake City, UT
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fixed

thanks to biopete for sending me a good used vcv. my car now shifts better than it ever did!
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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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