Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help




Go Back   PeachParts Mercedes ShopForum > Technical Information and Support > Diesel Discussion

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 02-21-2010, 04:45 PM
JEBalles's Avatar
Registered User
 
Join Date: Jun 2008
Location: Carlisle, MA
Posts: 1,225
Black Box on Valve Cover?

On my 240D Standard 4-speed, it's got that black box on top of the valve cover. I don't know what it does, controls EGR? I read that it can affect trans shifting on autos, so I don't have to worry about that, I just want it out. It's also connected to some linkage that goes to the air cleaner/intake manifold. What is all this madness? Can I just take of the linkages, plug the vacuum lines and tear it off?
__________________
1983 240D 3.0T 4-speed manual, now sold

1989 Subaru GL Wagon 5-speed Touring Edition
Reply With Quote
  #2  
Old 02-21-2010, 04:48 PM
Scott98's Avatar
Registered User
 
Join Date: Aug 2003
Location: Weston, FL
Posts: 1,254
I removed mine to give the valve cover a cleaner look. (I also polished the valve cover). I have no idea what it did. My butterfly valve on the intake was also hard-wired in the wide open position. I don't know if it was originally hooked up to it or not.

Scott
__________________
Scott
1982 Mercedes 240D, 4 speed, 275,000
1988 Porsche 944 Turbo S (70,000)
1987 Porsche 911 Coupe 109,000 (sold)
1998 Mercedes E300 TurboDiesel 147,000 (sold)
1985 Mercedes 300D 227,000 (totaled by inattentive driver with no insurance!)
1997 Mercedes E300 Diesel 236,000 (sold)
1995 Ducati 900SS (sold)
1987 VW Jetta GLI 157,000 (sold)
1986 Camaro 125,000 (sold - P.O.S.)
1977 Corvette L82 125,000 (sold)
1965 Pontiac GTO 15,000 restored (sold)
Reply With Quote
  #3  
Old 02-21-2010, 07:03 PM
Diesel911's Avatar
Registered User
 
Join Date: Sep 2007
Location: Long Beach,CA
Posts: 23,348
Yes, the little plastic valves control the EGR.
They only have an effect on an Automatic Transmission if they become a source of a Vacuum Leak; otherwise they do and control nothing that effects and Auto Trans.
__________________
84 300D, 82 Volvo 244Gl Diesel
Reply With Quote
  #4  
Old 02-21-2010, 08:43 PM
JEBalles's Avatar
Registered User
 
Join Date: Jun 2008
Location: Carlisle, MA
Posts: 1,225
I took it off, looks much nicer now. I plugged up the vacuum hoses with bbs and just popped the linkage off. It didn't look like it was controlling anything.
__________________
1983 240D 3.0T 4-speed manual, now sold

1989 Subaru GL Wagon 5-speed Touring Edition
Reply With Quote
  #5  
Old 02-22-2010, 12:17 AM
Eric's Avatar
Banned
 
Join Date: Jan 2007
Posts: 222
Quote:
Originally Posted by Diesel911 View Post
They only have an effect on an Automatic Transmission if they become a source of a Vacuum Leak; otherwise they do and control nothing that effects and Auto Trans.
Thats on a 300d, the valve on the 240D controls shift timing.
Reply With Quote
  #6  
Old 03-02-2010, 01:20 PM
Registered User
 
Join Date: Feb 2004
Location: Berkeley, California
Posts: 214
They control shift timing on a manual trans 240D? Like with mind control waves, or what?
__________________
Ash Peltier - tools, truck, tales
---------510-331-4118-----------
1982 240D - (272,000)
1998 Honda VTR1000F(RT) Superhawk Freeway (58,000) "Madrid"
1996 Toyota T100 4x4 (84,000) "Mary Kay"
Reply With Quote
  #7  
Old 03-02-2010, 01:20 PM
Registered User
 
Join Date: Feb 2004
Location: Berkeley, California
Posts: 214
Quote:
Originally Posted by Scott98 View Post
I removed mine to give the valve cover a cleaner look. (I also polished the valve cover). I have no idea what it did. My butterfly valve on the intake was also hard-wired in the wide open position. I don't know if it was originally hooked up to it or not.

Scott
Pics of your polished valve cover?
__________________
Ash Peltier - tools, truck, tales
---------510-331-4118-----------
1982 240D - (272,000)
1998 Honda VTR1000F(RT) Superhawk Freeway (58,000) "Madrid"
1996 Toyota T100 4x4 (84,000) "Mary Kay"
Reply With Quote
  #8  
Old 03-02-2010, 01:27 PM
Eric's Avatar
Banned
 
Join Date: Jan 2007
Posts: 222
Quote:
Originally Posted by driad_98 View Post
They control shift timing on a manual trans 240D? Like with mind control waves, or what?
Huh?

Vacuum.
Reply With Quote
  #9  
Old 03-02-2010, 02:23 PM
JEBalles's Avatar
Registered User
 
Join Date: Jun 2008
Location: Carlisle, MA
Posts: 1,225
Quote:
Originally Posted by Eric View Post
Huh?

Vacuum.
I don't think he realizes you were talking about autos.

Either that or he's bein' a smaht alec.
__________________
1983 240D 3.0T 4-speed manual, now sold

1989 Subaru GL Wagon 5-speed Touring Edition
Reply With Quote
  #10  
Old 03-02-2010, 02:38 PM
vwnate1's Avatar
Diesel Dandy
 
Join Date: Nov 2005
Location: Sunny So. Cal. !
Posts: 2,855
Post ' Mind Control Waves '

Quote:
Originally Posted by driad_98 View Post
They control shift timing on a manual trans 240D? Like with mind control waves, or what?
Yes but the tinfoil beanie hat I wear stops them....
__________________
-Nate
1982 240D creampuff 363,000 miles, just overhauled
1978 300CD back from the dead&1980 300CD 90K Miles ICE COLD AC ~ SOLD
1984 300CD KEEPER ! 423,XXX miles
1984 Euro 300TD Fully optioned SWMBO's
1974 350SLC 4 speed stickshift SOLD & missed
Krazy Kommie Ural Motos (3)
BMW Motos /5's SOLD
1959 VW #113 Deuxe Beetle, 36hp engine, stock
Junk Rust
Arthritis Crushed Spine,Broken Neck&Back
Memories &
Peace Of Mind
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On




All times are GMT -4. The time now is 12:34 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2018 Pelican Parts LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page