PLEASE HELP ME!!! DOES ANY ONE KNOW WHAT'S WRONG WITH MY CAR??

Discussion in 'Technical' started by *ZxHuNnI*, Sep 12, 2007.

  1. Chad_

    Chad_ Well-Known Member

    this is what the car will do if the afm is buggard, wont let you rev past 2500
     
  2. cbzx

    cbzx cbzx

    May be we should bet on these

    Points for closest correct option , reward one stubby or tinny of choise to the winner at the aus 300zx nats in 2008. Cowra.;)
     
  3. pexzed

    pexzed Forum Administrator

    If the tacho needle is jumpinmg about when the revs are steady, then the problem will be electrical, not fuel.

    Money will be on CAS or PTU, and especially PTU if the car drives fine, and then plays up, and once playing up, keeps playing up until it's put away long enough to cool down.
     
  4. ugame

    ugame user #1

    Alternator

    ....allthough why is the battery re-charing at all?

    meh... intermitent alternator fault is my bet. Im a gambling man.
     
  5. *ZxHuNnI*

    *ZxHuNnI* New Member

    hey

    i live in geelong......
    the only thing is that it only does this problem when it wants to..... at other times its fine?
     
  6. apollo

    apollo New Member

    PTU!!!!

    Trust me I know this happend to me when I first got the ZED as well.

    lol and recently..
     
  7. *ZxHuNnI*

    *ZxHuNnI* New Member

    hey

    yes it depends.... when the problem starts the car just starts to chug and lose power.... i put my foot down but it kicks in and out.. if you know what i mean???
    it will go for a bit..... sometimes up to 5,000 rpm or even more, and then just starts to lose power until it eventually stops...
    Then if im lucky it will go again for a bit.....
    if i hold my foot on the pedal for a bit, it sometimes kicks in and goes, and i mean i can get up to a high speed and high revs for a bit and then just dies...
    and thats all it keeps doing! Chugging and jolting, with the revs going up and down...
    I have no idea what to do...
     
  8. *ZxHuNnI*

    *ZxHuNnI* New Member

    hi

    If it is the ptu ( im assuming thats the computer?)
    How can this be fixed?
    Do i have to replace the whole thing or can it just be reprogramed or something?
    How can this be checked??
    Ppl have been saying put it on a data scan?
    Where can i get this done and whats involved??
    Thanks:)
     
  9. rollin

    rollin First 9

    anyone thinking fuel starvation? blocked fuel filter?
     
  10. *ZxHuNnI*

    *ZxHuNnI* New Member

    hey

    ok so if thats the problem how do i fix it???

    what was your car doing when yours played up???

    Is ther any way for certain that i can check for sure that this:) is the problem before i go replacing things?

    do u have any idea how much it is to replace? or whats involved??

    Thanks
     
  11. *ZxHuNnI*

    *ZxHuNnI* New Member

    hi

    IT CANT BE BLOCKED FUEL FILTER COS I JUST HAD A NEW ONE FITTED.........:confused:
     
  12. WhiteNight

    WhiteNight Littering and...

    PTU

    The PTU is this bad boy right here. Series 1 was prone to failure and nissan recalled and released a series 2 which we now have to buy and fit. Car cant run without it. If it is the problem it needs to replaced with the S2 version and wired up. $250??

    [​IMG]
     
  13. DonoRyan

    DonoRyan Rick James

    Sounds like FPCU.

    This happened to a colleague at work. Would drive OK for 20 mins or so then just die in the arse. Let it sit then could drive again (for a while). Bypassed and no dramas since.

    Don
     
  14. NickTT

    NickTT L E X U S

    or you can just replace it with a working S1 PTU for $50~
     
  15. ports

    ports the pro

    For your information............
    AFM: Air Flow Meter
    CAS: Crank Angle Sensor
    PTU: Power Transistor Unit
    IACV: Idle Air Control Valve
    TPS: Throttle Position Sensor

    With the symptoms your zed is displaying, the PTU may need replacing, although
    the CAS will show similar signs if failing, but less likely, or a combination of some of the above.:cool:
     
  16. ADAMZX

    ADAMZX 2000spec Conversion

    Would a ConZult test help diagrose the problem for her. Mayb she has code errors on her ECU that might tell us whats wrong??
     
  17. madmacka

    madmacka Member

    AFM = Air Flow Meter

    its directly after your air filter. if you take off the nose peice between your head lights. its the thing with the big plug in the side of it.
     
  18. madmacka

    madmacka Member

    have you tried...

    the PTU or CAS yet?

    if the filters has been replaced and pumps all good.

    in order of most likely

    1 PTU
    2 CAS
    3 AFM

    also it may not be the unit it self. it might be a simple as rusted conections in the plugs for each of these.

    find a zed owner in your area that has spare parts (alot of us do) start with the ptu. check its plugs and swap it out, if its still no good move to the next.

    your problem sounds electrical. check all the plugs that connect to these. you may as well check injector plugs and coil pack plugs while your at it..

    i think there is plenty of info in the tech section and newbie photo's to help you out.
     
  19. KEZA

    KEZA Zed Fiend

    You may have changed

    the fuel filter, but that does not rule out that you have crap in your fuel tank that then blocks up fuel getting to your fuel pump.
    Cheers
    Kerry
    :zlove:
     
  20. Scrubber

    Scrubber New Member

    when your mechanic replaced the fuel pump did he clean out the fuel tank as it could be a blocked sock on the fuel pump. i had that problem with mine

    more than likely tho it will be a PTU well thats my guess any way
     

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