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ML270 CDI Intermittant Limp Home Mode

Discussion in 'Engine, Drivetrain, Fuel and Exhaust' started by NeilO, May 18, 2009.

  1. NeilO

    NeilO New Member

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    I have a 2005 ML270CDI, I have noticed that the car was going into Limp Home Mode on an intermittant basis.

    I took it to a MB Specialist and there was no error messages on the car, they said from their experience its likely to be the Air Flow Meter (or something like that, sorry I am no mechanic).

    If I switch the car off and then on again it clears for a while

    The problem still happens although was less frequent for a while, I have noticed that the problem seems to happen when I am on Motorways, so I did some different testing and it seems to be if I stay around 2500 RPM the problem doesn't happen but if I drive at 3000 RPM or over it seems to happen.

    I then decided to drive round town to prove my theory I dropped the Auto in two 1,2,3 and 4 to try and keep it over 3000 RPM but the problem didn't happen and only seems to happen in Drive.

    It is back into the MB Specialist on Thursday but thought I would see if anybody has had a similar issue........

    Any Ideas appreciated .... Hopefully not too expensive ones.....;)

    Cheers
     
  2. Xtractorfan

    Xtractorfan Senior Member

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    Your Mercedes:
    S class
    As stated most probably the MAF..air flow meter..most common problem for causing limp mode on all makes of cars.. Driving at 2.500rpm will not show any adverse effects as the engine will only rev to 3000rpm when in limp mode,
    A new MAF..from the MB dealer is only around £60, well worth fitting
     
  3. Cole@MBS

    Cole@MBS Forum Supporter Authorised Forum Supporter

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    Location:
    Hedge End, Southampton
    Your Mercedes:
    124 300 CE 24 Coupe, 209 240 CLK
    Other common fault is the inport shut off motor and/or linkage on manifold, done a few of them now, but as Xtractorfan said, common for the airmass, Saying that, on the 163 it comes up on star pretty much everytime!!
     
  4. television

    television Always remembered RIP

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    Your Mercedes:
    2002 SL500, 216 CL500, all fully loaded
    You can unplug the MAF and try the car, they often go well without when they are faulty
     
  5. OP
    NeilO

    NeilO New Member

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    I have already swapped the MAF took it back to the Mercedes Specialist that swapped the MAF. They now think its a blockage somewhere, as I said I am not a mechanic but they said they need to take off the exhaust and clean or replace the particle filter. My issue is that it just seems guess work rather trying to troubleshoot and at my expense.

    Anyone seen the paticle filters get clogged as I am told they are 2-300 pounds to buy and about 3 hours labour.

    Thanks for your help so far

    Cheers

    Neil
     
  6. Robin Stowell

    Robin Stowell New Registration

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    Limp Home or stuck in drive?

    Hi,

    I've had the same problem. It seems to occur when accelerating and the auto doesn't shift up. However I can rev to 4000rpm. I've no idea yet but let me know what MB say.

    Robin
     
    Last edited: May 27, 2009
  7. traffic

    traffic New Member

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    Hey mate, did you ever get the route of that problem you had with your ML? Mine is doing the exact same thing!!!
     
  8. dieselman

    dieselman Senior Member

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    A diesel
    All the above makes me think it could be a stuck EGR valve.
     
  9. spraydizzy

    spraydizzy New Registration

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    Location:
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    Your Mercedes:
    ML 270 Cdi/2002/270 Cdi
    Hi NeilO

    what was the outcome of your limp problem ????
     
  10. _Taz_

    _Taz_ Senior Member

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    Your Mercedes:
    2011 E63 6.3NA AMG Tenorite Estate MCT 7g
    if it has a DPF, check the DPF sensor works....

    was the fault on my MB :D
     
  11. tony jr

    tony jr Senior Member

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    Your Mercedes:
    GL320 X164 2007
    check for little cracks in the rubber connectors of the small vacuum lines. One of the small Y connectors had a slight split and this caused an the same symptoms!
     
  12. loonytoon

    loonytoon Member

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    Your Mercedes:
    ml350 cdi ml 270cdi 2003 inspiration 1987 MK2 XR2,1990 MK3 XR2i,1995 vento vr6, 2001 vw bora 1.8 t
    hello mate dont know if you sorted this out, but my ml was doing the same and eventually went in to permanent limp up until 3 days ago when i sqirted some contact cleaner inside the connections on the turbo and egr vaccum transducers ever since it has not missed a beat hope this helps:D
     
  13. Digger dave 2011

    Digger dave 2011 New Member

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    Your Mercedes:
    Ml270. 99
    My ml270 kept. Going. In to limp mode no warning lights, I'd have to stop switch off then restart to clear limp Mode I found it was due. to low level of fluid caused by leak at the connector. plug seals failed. I fitted a new connector plug which comes with. Seals on it , all sorted. now. it wasn't. the air maff. sensor. Or the conductor plate in the transmission that houses the solenoids. Which can be a cause . so I just Replaced the pan filter. New sump gasket. 3.5 ltrs of new fluid drives a treat now. Done. 233000 miles. Just about run in lol, still going strong love my ml270 1999/ 2000 regards digger dave 2011
     
  14. Digger dave 2011

    Digger dave 2011 New Member

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    at last i know what causes limp mode on the ml270 cdi 2000 yr digger dave
     
  15. Digger dave 2011

    Digger dave 2011 New Member

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    at


    at last i know what causes limp mode on the ml270 cdi 2000reg fix costs under a £5 if its what i found try me or your money back digger dave
     
  16. Digger dave 2011

    Digger dave 2011 New Member

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    Your Mercedes:
    Ml270. 99
    that doesnt work
     
  17. Digger dave 2011

    Digger dave 2011 New Member

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    Your Mercedes:
    Ml270. 99
    that doesnt workbut at last i know what causes limp mode on the ml270 cdi 2000 yr milage 233000 mile £5 fix you,ll want to throw maney at me fo fix it im not joking digger dave
     
    terrya likes this.
  18. Digger dave 2011

    Digger dave 2011 New Member

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    Your Mercedes:
    Ml270. 99
    that doesnt workbut at last i know what causes limp mode on the ml270 cdi 2000 yr milage 233000 mile £5 fix you,ll want to throw maney at me fo fix it im not joking digger dave
     
  19. Digger dave 2011

    Digger dave 2011 New Member

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    Your Mercedes:
    Ml270. 99
    that doesnt workbut at last i know what causes limp mode on the ml270 cdi 2000 yr milage 233000 mile £5 fix you,ll want to throw maney at me fo fix it im not joking digger dave
     
  20. Taffy7hfa

    Taffy7hfa Senior Member

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    Your Mercedes:
    2004 ML350 Inspiration .2002 ML270 CDI .2016 Hyundai i30 1.6crdi.2014 Peugeot 308 1.6 HDI.
    Can you hear the turbo spinning up? The turbo charger makes these cars they are pretty are horrible to drive if it stops working, check the vacuum lines, or could be a split turbo hose neither of these will trigger the EML but will feel like limp mode.
     

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