help 2000 tdi wont start

Discussion in 'VW Mk4 Jetta, Golf, New Beetle, Passat TDI forum' started by flixpink, Apr 14, 2011.

  1. flixpink

    flixpink New Member

    Joined:
    Apr 14, 2011
    Messages:
    2
    Car:
    vw
    on my 2000 tdi my car wont start unless i unplug the coolant temp sensor. then car starts up an runs ok but lack full power can any help me with this problem
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  2. chittychittybangbang

    chittychittybangbang Administrator

    Joined:
    May 23, 2007
    Messages:
    22,269
    Car:
    2006 Jetta TDI
    Location:
    CT
    It sounds like you may have 2 problems. One is the coolant temp sensor being bad. If you unplug it, it turns the glow plug time to maximum but it doesn't sound like that should be a big problem in TX.

    The lacking full power could be many things, I don't want to guess without things like datalogs or error codes, see : http://www.myturbodiesel.com/1000q/multi/low-power-fix-TDI.htm this article for a good start.
  3. Seatman

    Seatman Active Member

    Joined:
    Jul 9, 2010
    Messages:
    5,253
    Car:
    2000 Mk4 Golf Estate 1.9tdi 174 bhp
    Location:
    Scotland
    Mods:
    PP764's, turbo and mapping
    Have you checked for fault codes at all? It might save you chasing around trying to figure stuff out.:)

    welcometomyturbodies
  4. sprstu

    sprstu New Member

    Joined:
    Feb 26, 2011
    Messages:
    9
    Car:
    81 rabbitTD, 01 Golf TDI, 98 Jetta TDI
    Have you had your timing belt done recently? If so your timing is way off. Unplugging the temp sensor advances your timing to a much greater extreem then the ecu would do alone, it get set into thinking the temp outside is dead frozen. Poor timing will also have an impact on your performance as well.
  5. flixpink

    flixpink New Member

    Joined:
    Apr 14, 2011
    Messages:
    2
    Car:
    vw
    codes im getting are P1556 , P1144 an P1256
  6. qbics

    qbics New Member

    Joined:
    Apr 16, 2011
    Messages:
    1
    Car:
    golf mkIV
    P1556 = Motors for central locking, UNLOCK
    P1144 = Central Locking - Opening Motor
    P1256 = Fuel Injector for Cylinder 8 (N86)

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