Audizine - An Automotive Enthusiast Community

Results 1 to 5 of 5
  1. #1
    Veteran Member Four Rings
    Join Date
    Oct 21 2005
    AZ Member #
    8454
    Location
    y

    P1338 CPS open or to plus

    Guest-only advertisement. Register or Log In now!
    1.8t AEB

    What are the symptoms of a bad cps?

    Are running extremely rich and barely has any power one of them?

    Where's the best place to start to diagnose (ie easiest to hardest)?

    What i checked:
    1. Tried a different sensor
    2. Cam gear timing mark is 1/3 to the right of the valve cover
    3. Changed plugs (thinking meth flooded engine)
    4. Disconnected ic piping to throttle (Mafless. To check if piping was flooded with meth, has happened before lol)

    Haven't checked:
    Wiring
    Ecu
    Cam tensioner 16teeth (inside valve cover)
    Compression
    Ecu inj duty and timing request

    1.Was driving in boost and everything was fine (was playing around with the methanol prime and purge)
    2. Slowed down and engine just died
    3. Tried restarting
    4. Coasted to the side of road. Car was still a bit drivable, then engine died
    5. Tried restarting long crank, pedal floored, starts then revs to about 1500rpm and dies

    6. Reduced fuel by around 60-70% to get it started (rough tune, just reduced large parts of the maps to get it somewhere near 14)
    7. Afr was around 13-15afr
    8. Barely had enough power, needed to rev and slip clutch to get moving.
    9. If i let revs drop it would idle very low, but steady, at 600ish and wouldnt respond to gas pedal, need to restart and hold revs to around 1500rpm to get any response.

    10. No out of the ordinary sound, even engine starting/cranking sounded normal.

  2. #2
    Veteran Member Four Rings
    Join Date
    Oct 21 2005
    AZ Member #
    8454
    Location
    y

    Also will a dead crank sensor cause this? Vagcom can read rpms with the cam sensor unplugged.

    It starts with the 60% fuel reduction from normal and barely any power to move.
    Last edited by ricekikr; 07-29-2016 at 03:20 AM.

  3. #3
    Veteran Member Four Rings
    Join Date
    Oct 21 2005
    AZ Member #
    8454
    Location
    y

    Checked the socket pins, key on
    1 = ground
    2 = 4.9v
    3 = 5v
    Last edited by ricekikr; 07-29-2016 at 03:20 AM.

  4. #4
    Veteran Member Four Rings
    Join Date
    Oct 21 2005
    AZ Member #
    8454
    Location
    y

    Checked timing chain. Its 16 links.

    Anyone have any idea what could be causing this?

  5. #5
    Veteran Member Four Rings
    Join Date
    Oct 21 2005
    AZ Member #
    8454
    Location
    y

    Tried a diff ecu (euro aeb) = starting got blocked by immo but p1338 code still popped out.

    Tried a diff crank sensor, still the same code.

    Pin 2 now shows ~11v (batt is currently slightly below 12v)

    Comp test ~150psi

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  


    © 2001-2024 Audizine, Audizine.com, and Driverzines.com
    Audizine is an independently owned and operated automotive enthusiast community and news website.
    Audi and the Audi logo(s) are copyright/trademark Audi AG. Audizine is not endorsed by or affiliated with Audi AG.