Chris NottEM Tuning
Results 1 to 2 of 2
  1. #1
    Neutral

    Status
    Offline
    Join Date
    Oct 2007
    Location
    cork ,ireland
    Posts
    73

    dead spot on a4 2.5tdi

    hi all,

    a while since my last post.but im back again (coz i have a problem)

    Hopefully some one can shed some light for me.

    when driving along my a4 seems to get a slight hesitation at about 1800/2000 rpm,maybe a second or so. changed fuel filter and air flow meter ,no difference.(is doesnt happen all the time but it gets more frequent now)

    no vagcom faults showing up.audi cant find anything wrong ,but still charged me 700 euros to change faulty injector.

    thanks in advance
    c
    a4 v6 2.5tdi b6 18"rs rns-e genuine bt quattro chipped to 210hp mfsw,cruise control, ashtray ipod connector,

  2. # ADS
    ADS
    Join Date
    Always
    Location
    Global
    Posts
    Many
     
  3. #2
    evilscotsman's Avatar
    Space Cowboy

    Status
    Offline
    Join Date
    May 2008
    Location
    Fife, Scotland
    Posts
    1,345
    only suggestions, but i'd check boost pipes / vacuum leak, n75 or bosch dv if you have these, wastgate sticking open, bad DBW signal from the pedal, the ecu cant see a lot of faults like air leaks and often misses vacuum / boost faults but most things with a sensor should trigger an engine light like the n75 or DBW pedal signal.

    Also check o2 sensor for bad fuelling or AF ratio errors which can cause flat spots, if you could get it run on a rolling road dyno with a/f, boost/vac and timing measuring on and you might see whats happening...
    B4 TDI - old skool project / daily driver...if it ain't broke, it's probably an Audi...


 

 

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Single Sign On provided by vBSSO

Garage Plus, Vendor Tools vBulletin Plugins by Drive Thru Online, Inc.

Content Relevant URLs by vBSEO