Caddy 1.9 TDI Low power... Need help!

Discussion in 'General Diesel Discussion' started by Christer Markstedt, Nov 26, 2017.

  1. Christer Markstedt

    Christer Markstedt New Member

    Joined:
    Nov 25, 2017
    Messages:
    3
    Car:
    VW Caddy 2003 1.9TDI ALH
    Location:
    Sweden
    Hi,

    I have a vw caddy 1.9 tdi (ALH) that lacks power and I'm not getting any fault codes.
    It runs ok in first and second gear but lacks power to accelerate in higher gears and revs... Feels like I don't have a turbo... I can get it up to 130 kph but it takes time and in uphills it only does about 80 kph...
    But it runs good without problems in idle.

    I have checked the turbo vanes, they move freely.
    I have replaced all the vaccumhoses.
    I have replaced the MAF
    and airfilter. Even tried running it with filterbox open...
    I have replaced the the boost pressure valve N75
    I have removed and cleaned the intakte manifold (wasn't cloged).
    I have replaced the egr vaccum valve/switch and plugged the egr recirculation.
    I replaced the fuel filter and checked the fuelflow from the tank.
    I replaced the ecu but then it didn't run for more than 2 seconds (guess that's the immobiliser) so that was a no go.
    And I put an electric fule pump before the original fuel pump. (No difference but it was a cheap one with only 0.4 bar pressure?)

    So I'm out of ideas...
    I'm starting to belive it's the pump or turbo but shouldn't that give codes??
    If the injectors are clogged it shouldn't run smooth, right!?
    What symtoms does bad compression give?

    Anyone have any suggestions on what to try next?!

    Greatful for all thoughts on the matter!
     
  2. Vdubcaddy

    Vdubcaddy Member

    Joined:
    May 7, 2017
    Messages:
    35
    Car:
    Vw caddy 2004
    Location:
    Uk
    You really need to plug into vcds/vagcom and read the turbo whilst engineer running this will tell you the output pressure. Sounds as though the turbo is goosed.
     
  3. Vdubcaddy

    Vdubcaddy Member

    Joined:
    May 7, 2017
    Messages:
    35
    Car:
    Vw caddy 2004
    Location:
    Uk
    Should say I had the same on mine, turbo didn't give way to completely-thankfully- but a new turbo later and all is well.
     
  4. Christer Markstedt

    Christer Markstedt New Member

    Joined:
    Nov 25, 2017
    Messages:
    3
    Car:
    VW Caddy 2003 1.9TDI ALH
    Location:
    Sweden
    Ok, thanks!
    Have ordered that vcds cable on eBay... Still wating though...
    So it might be the turbo??
    Did you have any noise from it?
    Mine sounds fine.
    But I'll look in to that!!
     
  5. Vdubcaddy

    Vdubcaddy Member

    Joined:
    May 7, 2017
    Messages:
    35
    Car:
    Vw caddy 2004
    Location:
    Uk
  6. Keithuk

    Keithuk Super Moderator

    Joined:
    Aug 29, 2010
    Messages:
    7,166
    Car:
    2010 Golf GTD (170) CBBB
    Location:
    Stoke on Trent, England
    Fleabay cables are Chinese clones and give bad results. I know the genuine cables is expensive but you won't mend a silk purse with a sows ear.

    I moved this thread from Mk4 as we don't have a Caddy sub forum. ;)
     
  7. Christer Markstedt

    Christer Markstedt New Member

    Joined:
    Nov 25, 2017
    Messages:
    3
    Car:
    VW Caddy 2003 1.9TDI ALH
    Location:
    Sweden
    Ok, what cable do you recomended?
    The original costs almost 1000 euros here in Sweden. I paid 800 for the car so that feels a bit pricy.
    Anything in between?
     
  8. Keithuk

    Keithuk Super Moderator

    Joined:
    Aug 29, 2010
    Messages:
    7,166
    Car:
    2010 Golf GTD (170) CBBB
    Location:
    Stoke on Trent, England
    The only cable I would recommend is VCDS

    VCDS Distributor List

    There are loads of cheap EODB II scanners you can google it from £7 but generic scanners give false results.
     

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