Auto transmission: Won't start in neutral

Discussion in 'Technical' started by MyZX, Jul 6, 2016.

  1. MyZX

    MyZX Member

    Hey all, has anyone experienced this?

    I have a 1990 auto. The car won't start when in neutral. Will only start in park.

    Would love to hear from anyone who's experienced this and been able to rectify it.

    Cheers,

    MyZX
     
  2. Madcow

    Madcow Active Member

    What would you like rectified? Seems pretty normal to me.
     
  3. rob260

    rob260 Administrator Staff Member

    When I used to do road service it was not uncommon to come across cars that would start in neutral but not in park; the cause of this was a failed inhibitor switch. I've not come across cars that would start in park but not in neutral before, but I'm not sure if this is "normal" for Z32 either. If you can find someone with conzult or similar the next step would be to see if your neutral switch is working.
     
  4. MyZX

    MyZX Member

    Hey Madcow,

    I believe it won't pass roadworthy if it can't start in neutral.
     
  5. East Coast Z

    East Coast Z Well-Known Member

    The engine should start in Park or Neutral.
    The inhibitor switch is actually set & tested in the neutral position.
    Sounds like it requires adjustment.
    Look in the Nissan Service Manual in the Automatic Transmission Section.
     
  6. Madcow

    Madcow Active Member

    Must have it arund the wrong wya.
     
  7. Egg

    Egg ....

    Is your foot...

    ...on the brake?
    Mine will start in neutral only with the brakes applied.
     
  8. QLDZDR

    QLDZDR ID=David

    That makes perfect sense.
    I think he's cracked it.
     
  9. MyZX

    MyZX Member

    Hey Egg,

    yeah i tried that. No luck, still won't start even with the brake on.
     
  10. Egg

    Egg ....

    Bugger

    I thought I nailed it.

    My Z 100% wont start in neutral less the brakes are on quite hard.

    Inhibitor switch like others have mentioned, or brake switch... at a guess.

    Good luck
     
  11. MyZX

    MyZX Member

    thanks, I'll try pressing the brake harder and see what happens.

    Cheers,

    MyZX
     
  12. NI85

    NI85 Active Member

    The Z32 starting wiring diagrams I'm looking at only show the inhibitor switch
    that stops the car from starting. As the Staring relay (coil) is powered when
    key is turned to start position and the inhibitor switch grounds it when either in park or neutral.
    ---
    If the brake affects car starting sequence, it could be someone's additional security wiring.
    --
    Clutch, brake pedal switches are mounted as so they are release when touching pedal, not pressed. Pressing harder wouldn't make a difference, unless the switch wasn't adjusted properly.
    --
    Kick/shift-down switch for accelerator is a pressed switch....well on Z31 Automatic, anyway.
     

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