W210 E320 Cdi EPC (loss of power under hard acceleration)

Discussion in 'Engine' started by W210VIP, Jan 12, 2019.

  1. W210VIP

    W210VIP Member

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    Hello,

    So just a quick overview. Gearbox in limp mode, no gear changes, no boost.

    Fixed: change conductor plate and connector.

    Car now changes gears and has full boost! However boost in now intermittent only under hard acceleration.

    Codes came up with MAF and high turbo pressure. MAF changed with Oem Pierburg and issue still persists.

    Any ideas?

    P.S.

    Egr has not been deleted. YET!

    Thank you
     
  2. OP
    OP
    W210VIP

    W210VIP Member

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    Please help. Anyone!
     
  3. bob6600

    bob6600 Hardcore MB Enthusiast

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    The problem with these is that the EGR can cause limp mode but it throws a code up via the MAF so immediately people change the MAF and it doesn't cure it. Can you test any live data? If the EGR is gunked up, it is best to clean it out before the delete IMO and once the car is working correctly go from there
     
    a111r likes this.
  4. OP
    OP
    W210VIP

    W210VIP Member

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    Thanks for chipping in, it’s greatly appreciated!

    Yes my mechanic would be able to test live data. He even said he could delete the egr from his computer system. Is this possible. I seen quantum tuning do it.

    How would I able to take off the egr valve? Seems like a bitch to get too.

    Next step would be turbo actuator
     

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  5. mersum1es

    mersum1es Hardcore MB Enthusiast

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    check vacuum lines for leaks, and you can swap turbo and egr control actuators
     
  6. GordonTarling

    GordonTarling Hardcore MB Enthusiast

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    How long since it had a new fuel filter? Worth changing it if it's been a while.
     
  7. amazighman

    amazighman Active Member

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    Egr delete supposed to be an MOT failure under the new guidelines.

    Remove it and give it a good clean every now and again.

    My personal practice
    i do not tamper with any environmental devices on cars , be it EgR dpf or cat.
     
  8. OP
    OP
    W210VIP

    W210VIP Member

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    Done and no luck. Even bought a new transducer
     
  9. OP
    OP
    W210VIP

    W210VIP Member

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    I don’t know if this is true for egr and diesels
     
  10. OP
    OP
    W210VIP

    W210VIP Member

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    Need to figure out how to get the egr out!
     
  11. OP
    OP
    W210VIP

    W210VIP Member

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    OM 648
     
  12. bob6600

    bob6600 Hardcore MB Enthusiast

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    Are you sure? The W210 has an OM613 and W211 has an OM648.

    The EGR isn't too difficult but will require a bit of time. An E10? socket and/or 8mm spanner (ratchet) make life a lot easier. You will lose some coolant too. You need to remove the EGR cooler which can be a pain to line up. EGR has 3 bolts on the top and one underneath connected to a long bracket which holds in against the block. This is easier from underneath with an extension.
     
  13. amazighman

    amazighman Active Member

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    New items
    New items that you’ll test from 20 May 2018 are:

    • brake fluid contamination
    • additional braking device performance
    • daytime running lamps
    • front fog lamps
    • reversing lamps
    • bumpers
    • prop shafts
    • all rear drive shafts
    • cab security
    • cab steps
    • floors
    • passenger hand grips (quads and heavy trikes only)
    • noise suppression material
    • undertray security
    • emission control equipment:
      • oxygen sensor
      • NOx sensor
      • exhaust gas recirculation valve
      • other emission control equipment
    • engine malfunction indicator lamp
    • diesel particulate filter (DPF) tampering
    • fluid leaks - engine, transmission and so on
    I did read the new mot guidlguide and it does mentioned EGR
     
  14. OP
    OP
    W210VIP

    W210VIP Member

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    Oops sorry you are correct. Om613!
    And correct again. However I hear people passing with the delete.
     
  15. OP
    OP
    W210VIP

    W210VIP Member

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    Thanks for this. Will give it a go!
     
  16. amazighman

    amazighman Active Member

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    I believe the EGR is there for a very good reason and it is to reduce NOx which is a harmful gas that gives the diesel its bad reputation.

    EGR is a regular maintenance item, so cleaning it every now and again isnt a bad thing. Once you have removed it once or twice it will be an easier task to do.

    Best of luck
     
  17. OP
    OP
    W210VIP

    W210VIP Member

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    Anyone know anything about the egr delete? Trying to figure you out if I need to cut the wires or just peel back insulation and install shunt
     
  18. OP
    OP
    W210VIP

    W210VIP Member

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    Thanks I will definitely clean it up first!
     
  19. bob6600

    bob6600 Hardcore MB Enthusiast

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    You do not need to cut the wires
     
  20. OP
    OP
    W210VIP

    W210VIP Member

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    So just peel back insulation for wires and connect my shunt and then electrical tape it up?
     

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