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

E320 Cdi year 2000 Limp Home mode

Discussion in 'Engine, Drivetrain, Fuel and Exhaust' started by rchollebon, Dec 30, 2012.

  1. rchollebon

    rchollebon New Member

    Messages:
    4
    Likes Received:
    0
    Joined:
    Dec 30, 2012
    Location:
    Twickenham
    Your Mercedes:
    E320/2000/3226cc
    Hi, my E320 Cdi (135000 miles) had from new (2000) always been great until recently decided to go into limp mode, took to an indi got the faults cleared and then read again, the full fault code is P1470-008 Charge pressure control Open circuit in wiring signal wire.
    So far I have chaged the MAF sensor and the pressure sensor (i presume it is as it is on the inlet manifold, today I found another sensor on the inlet manifold which I presume measures charge temp, this I cleaned with brake cleaner, the car is now sometimes ok ish but not as quick as normal any pointers? thanks in advance
     
  2. mersum1es

    mersum1es Senior Member

    Messages:
    1,956
    Likes Received:
    229
    Joined:
    Sep 25, 2010
    Location:
    Finland
    Your Mercedes:
    W212/-09/350CDI, W219/-07/320CDI, EX:W220/-01/320CDI, EX:W211/-04/320CDI, EX:W210/-01/270CDI
    If fault code is right (was it tested with star?), it points to the turbo control actuator. Check it...
     
  3. OP
    rchollebon

    rchollebon New Member

    Messages:
    4
    Likes Received:
    0
    Joined:
    Dec 30, 2012
    Location:
    Twickenham
    Your Mercedes:
    E320/2000/3226cc
    Thanks for your time, I presume the fault code is accurate the guy gave me the print out and it is a star read out sheet, but was not keen on the work as if he was puzzled! where do I find the turbo actuator and how do I test it? is it something I can replace?
     
  4. Naraic

    Naraic Moderator

    Messages:
    10,330
    Likes Received:
    942
    Joined:
    Mar 4, 2010
    Your Mercedes:
    2005 CL500.
    You need an indie who not only has STAR, but can interpret what it means. Wait for a forum indie to come along and advise before replacing yet another part. (With apologies to mersum1es who may well be correct).
     
  5. andy@pcd-ltd

    andy@pcd-ltd Guest

    Just had a look on the star machine there is two checks that can be carried out one is to read the actual value of the charge pressure vacuum transducer.

    The other is to check the voltage to the sensor
     
  6. mersum1es

    mersum1es Senior Member

    Messages:
    1,956
    Likes Received:
    229
    Joined:
    Sep 25, 2010
    Location:
    Finland
    Your Mercedes:
    W212/-09/350CDI, W219/-07/320CDI, EX:W220/-01/320CDI, EX:W211/-04/320CDI, EX:W210/-01/270CDI
    No problem Naraic! ;)

    Turbo actuator malfunction is not rare, so I suggested it...
    Here are videos about the actuator movement, you could check if it moves at all (well, in that case it should give some smoke too):
    http://www.youtube.com/watch?v=hqCoYB0Dwv0
    http://www.youtube.com/watch?v=ZOGDkVZVpVY

    My star computer is still stored to the closet during the season feasts so I cannot give more specific hints to the actuator subject (and like said, limp mode could be caused several other things) :)
     
    Last edited: Dec 31, 2012
  7. OP
    rchollebon

    rchollebon New Member

    Messages:
    4
    Likes Received:
    0
    Joined:
    Dec 30, 2012
    Location:
    Twickenham
    Your Mercedes:
    E320/2000/3226cc
    Staring to get there

    Thanks for all the pointers, I can move the actuator by hand, however as the car is now in near permanent safe mode reving the engine does not help, I guess I will continue my attempts in the new year. I am determined to understand more about this and fix it(mainly for the satisfaction) also the car is nearing the end of its life with terminal rust which is a great shame as she has been running perfect lately so I am sure everyone will understand why I am not keen to throw a bunch of money at it, Oh and Happy New Year:D
     
  8. cutaresku

    cutaresku Active Member

    Messages:
    38
    Likes Received:
    0
    Joined:
    Oct 26, 2012
    Location:
    RO
    Your Mercedes:
    W210, 2001, OM611
    Try to swap the vacuum transducers: EGR with turbo. See if any change. 110 euro new one, just MB.
     
  9. OP
    rchollebon

    rchollebon New Member

    Messages:
    4
    Likes Received:
    0
    Joined:
    Dec 30, 2012
    Location:
    Twickenham
    Your Mercedes:
    E320/2000/3226cc
    Fault Found

    Thanks for all the advice, I will go through how I got there, following the advice that it was likely to be the vacum transducer I bit the bullet to go and buy one only to find out there are 2 on the car (1 for the EGR and one I had not found yet) so back home to find it and then check the extra pipes, it is well hidden under the vacum tank, stripped all this off checked pipes etc and then began to understand how it all works, as there are 2 similar transducers on the car I took both and checked the coil values and presto the turbo one is open circuit. Off course the parts department is shut on by then so will find out for certain tomorrow. A sincere thanks to everyone for the advice recieved, it was a fun journey and the old girl should chug on for a bit.
     
  10. BAZZER1

    BAZZER1 Senior Member

    Messages:
    1,542
    Likes Received:
    7
    Joined:
    Jul 9, 2011
    Location:
    FERNDOWN DORSET
    Your Mercedes:
    E320cdi AVANTGARDE SELECT
    Well done Mate, its always satisfying when you can do the job yourself and learn more on the journey, also good tips for other Forum Members.
    Best wishes
    BAZZER1
     
  11. mick wakelin

    mick wakelin New Member

    Messages:
    3
    Likes Received:
    0
    Joined:
    Jan 10, 2013
    Location:
    Sutton, Surrey
    Your Mercedes:
    E320 cdi Estate 2001
    rchollebon, Would you be prepared to assist me with a very very similar problem I am having with my 2001 E320 cdi . I work very close to Twickenham and am more than happy to pay for your time if you can point me in the right direction. I hope you don't mind me asking..Thanks to mersum1es for the link to this forum..
     
  12. mick wakelin

    mick wakelin New Member

    Messages:
    3
    Likes Received:
    0
    Joined:
    Jan 10, 2013
    Location:
    Sutton, Surrey
    Your Mercedes:
    E320 cdi Estate 2001
    A brief summary of my similar problem. E320 cdi 2001 Estate
    Chaps. I have just joined this site and this is my 1st posting. I have exactly the same problem, I have taken it to a Merc specialist who has read the codes and I'm getting:-
    P2200, P1470 & P1222. I have changed the MAF, the Merc man has supposedly checked the EGR valve, I have made and fitted the EGR shunt although there was no smoking from it so this may have been un neccesary. The car is in great condition, changes gear perfectly, it's done 120K and was a pleasure to drive but now it seem OK when driving around town but on a motorway especially whilst going up a gradient it struggles to get to 80 MPH. When driving in town if I floor it I get the EPC light come on. My Merc man thinks it is a blockage in some pre cat filter..?.. but the codes kind of indicate turbo actuator or pedal position sensor. When driving normaly and you take you foot off the gas you get a little "phst" noise (wastegate or something, I know nothing about diesels) but when going up a hill this "phst" noise happens all the time and the car loses power..any help would be SO greatly received. Can anyone recommend a good independent Merc man near Sutton (Surrey).
    Many thanks.
    Mick
     
  13. oigle

    oigle Senior Member

    Messages:
    3,044
    Likes Received:
    356
    Joined:
    Mar 15, 2005
    Location:
    Redcliffe, Queensland, Australia
    Your Mercedes:
    Currently 2003 ML270. 2012 Nissan Maxima 250SL.
    If you click on the appropriate link in the top right corner of this page and follow the dropdown, you will get a list of indi's in your area.
     
  14. giorgio 72

    giorgio 72 New Registration

    Messages:
    1
    Likes Received:
    0
    Joined:
    Dec 31, 2014
    Location:
    guildford
    Your Mercedes:
    e 320 2004 320cdi
    so i had the same problems,after starting abt.10 minutes driving droped to limp mode and push me to stop and turn the ignition of then start again,witch means the computer give a new signal to the engine and the car runs ok for few more minutes but she lost power again.So i did ask few mecanics and they connect the computer to tester,all the same results:tubo charger fault, y100/1 code. I did ordered a new turbo unit but i had a thought to add injector cleaner before i start the big job,and miracles happened,no more limp mode,the engine get back to life,smooth,strong pull as a train.So guys do the cleaning job befor you spend mega many on turbo charger.!!!
     
    Last edited: Dec 31, 2014

Share This Page