1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

Disabling EGR

Discussion in 'Engine, Drivetrain, Fuel and Exhaust' started by dieselman, Jul 4, 2010.

Tags:
  1. Frontstep

    Frontstep Senior Member

    Messages:
    6,691
    Likes Received:
    666
    Joined:
    Apr 22, 2007
    Your Mercedes:
    T210 320cdi
    This looks interesting for the future, I have the brain of a pea at moment but would it be feasible for a 320cdi ?
     
  2. toby1

    toby1 Senior Member

    Messages:
    4,825
    Likes Received:
    22
    Joined:
    Mar 13, 2007
    Location:
    West Berkshire
    Your Mercedes:
    1998 CL420 C140
    Member Alexanderfoti has done his W210 E320CDi and I intend to do the same.
     
  3. Naraic

    Naraic Moderator

    Messages:
    10,049
    Likes Received:
    725
    Joined:
    Mar 4, 2010
    Your Mercedes:
    2005 CL500.
    Glad to hear this Toby. When you do, take photos. Especially of the "kit" you have to make up ( resistors etc).

    Thanks.
     
  4. supermed41

    supermed41 Active Member

    Messages:
    41
    Likes Received:
    0
    Joined:
    Jan 25, 2010
    Location:
    Reading/UK/ West Berkshire
    Your Mercedes:
    2001 ML 270 lux pack
    Hi Toby1 as you are near me, when you do yours, can you help me with mine please.:):):)
     
  5. OP
    dieselman

    dieselman Senior Member

    Messages:
    6,017
    Likes Received:
    3
    Joined:
    Feb 10, 2001
    Your Mercedes:
    A diesel
    I had a spare set, but I can't find them now..I've been looking for the last few days.

    Ha ha...After ten minutes of searching It's your lucky night...I've just found them...

    Wait..;)
     
  6. Naraic

    Naraic Moderator

    Messages:
    10,049
    Likes Received:
    725
    Joined:
    Mar 4, 2010
    Your Mercedes:
    2005 CL500.
    My lucky night? You old tease.:D:D
     
  7. television

    television Always remembered RIP

    Messages:
    164,074
    Likes Received:
    271
    Joined:
    Mar 14, 2005
    Location:
    Daventry
    Your Mercedes:
    2002 SL500, 216 CL500, all fully loaded
    I should be able to let folk have any parts,,the resistors, are ¼ watt ok
     
  8. OP
    dieselman

    dieselman Senior Member

    Messages:
    6,017
    Likes Received:
    3
    Joined:
    Feb 10, 2001
    Your Mercedes:
    A diesel
    1/4 watt are fine as there is no current, just signal voltage.

    Ok, here we go...

    First identify your components. L-R = diode, 470 ohm and 1000 ohm resistors.

    [​IMG]


    Solder the 470 ohm resistor to the tail of the diode. Note the silver band on the diode shows which is the +ve blocking end.

    [​IMG]


    Add the 1k ohm resistor to the other end of the diode and add appropriate wire then clip off any stray tails.

    [​IMG]


    Fit heatshrink tubing to the bare sections.

    [​IMG]


    and then tape over with material tape for protection to complete.

    [​IMG]

    I've used the colour code in accordance with the first diagram, so red is +12v, yellow is MAF, green is EGR transducer signal.
     
  9. Naraic

    Naraic Moderator

    Messages:
    10,049
    Likes Received:
    725
    Joined:
    Mar 4, 2010
    Your Mercedes:
    2005 CL500.
    Great stuff Will. I replied your PM.
     
  10. supermed41

    supermed41 Active Member

    Messages:
    41
    Likes Received:
    0
    Joined:
    Jan 25, 2010
    Location:
    Reading/UK/ West Berkshire
    Your Mercedes:
    2001 ML 270 lux pack
    I'm no mechanic, please help me, i'll pay and i don't mind to drive to anyone of you guys in the UK please!!!!!!
     
  11. toby1

    toby1 Senior Member

    Messages:
    4,825
    Likes Received:
    22
    Joined:
    Mar 13, 2007
    Location:
    West Berkshire
    Your Mercedes:
    1998 CL420 C140
    Yes I will. That's the plan anyway. Now that I think I know what to buy, and after a nose round alexanderfoti's set-up, I'll be taking pics.

    I have a friendly electical engineer near me and I think he'll have a go at it.

    Can't wait to see if this fixes my smoke problem but at least it's a cheap try.
     
  12. Naraic

    Naraic Moderator

    Messages:
    10,049
    Likes Received:
    725
    Joined:
    Mar 4, 2010
    Your Mercedes:
    2005 CL500.
    Thanks Toby. DM has since posted photos of how to make the kit. Take photos though of the actual wires you attach to, that would be very helpful.
     
  13. soup nazi

    soup nazi Senior Member

    Messages:
    105
    Likes Received:
    0
    Joined:
    Mar 19, 2010
    Location:
    Cairns
    Your Mercedes:
    ML 270 CDI
    dieselman
    Quick question. As I said earlier the wire from MAF PIN 5 to plug 2 pin 24 on my car is Brown/White, not yellow/white. I have no yellow/white from the MAF at all. Is there any way I can confirm this is the correct wire? I would have thought that pin 5 would be the same on all 270's, the different colour does seem odd.
    SN
     
  14. toby1

    toby1 Senior Member

    Messages:
    4,825
    Likes Received:
    22
    Joined:
    Mar 13, 2007
    Location:
    West Berkshire
    Your Mercedes:
    1998 CL420 C140
    Had a look round Alexanderfoti's set-up on Sat morning (thanks for letting me take a look!).

    Took a few pics for my own reference and I intend to make a start this weekend.

    I'll keep everyone posted (well, W210 owners anyway!).
     
  15. OP
    dieselman

    dieselman Senior Member

    Messages:
    6,017
    Likes Received:
    3
    Joined:
    Feb 10, 2001
    Your Mercedes:
    A diesel
    Don't worry about the wire colour. If it's from pin5 and it varies from ~2v to ~4.5v with revs, it's the correct wire.

    Normally there are only 4 connections;
    12v
    Gnd
    5v
    signal

    There can be a fifth connection which is the temp sensor.
     
  16. chancha

    chancha Active Member

    Messages:
    40
    Likes Received:
    0
    Joined:
    Mar 20, 2008
    Hi Toby, any update on your mod. I will be doing the mod sometime soon and would be interested in your findings. I had a look at the wiring toaday and it looks like my e320 cdi has yellow/white, red/black and grey/black wires for the circuit. Hopefully you can confirm this too.

    Rgds Kevin
     
  17. toby1

    toby1 Senior Member

    Messages:
    4,825
    Likes Received:
    22
    Joined:
    Mar 13, 2007
    Location:
    West Berkshire
    Your Mercedes:
    1998 CL420 C140
    Not started yet. My electronics friend has taken a look and has agreed to knock up the resistor, etc as per dieselman's pics.

    I'll chase him up and see where we are.
     
  18. supermed41

    supermed41 Active Member

    Messages:
    41
    Likes Received:
    0
    Joined:
    Jan 25, 2010
    Location:
    Reading/UK/ West Berkshire
    Your Mercedes:
    2001 ML 270 lux pack
    Hello toby1, can you ask your electronics friend to do my ML270 for me please
     
    Last edited: Jul 28, 2010
  19. Alex Crow

    Alex Crow Senior Member

    Messages:
    10,677
    Likes Received:
    23
    Joined:
    Jul 9, 2009
    Location:
    Super Suffolk
    Your Mercedes:
    W169, W124, w202, W203, KTM 250 EXC, VW T25 camper and a Polo in a pear tree
    i see an ebay opportunity for someone here! make up the resistor/diode mod with wires and instructions and hawk it on ebay. parts cost = pennies, could sell for £10-£20.
     
  20. Naraic

    Naraic Moderator

    Messages:
    10,049
    Likes Received:
    725
    Joined:
    Mar 4, 2010
    Your Mercedes:
    2005 CL500.
    [​IMG]

    So I went to do the mod to-day, but mu ECU is a little different from DM's. Where do I go now?
     

    Attached Files:

Share This Page