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Holden VR won't start!!!

Discussion in 'VR - VS Holden Commodore (1993 - 1997)' started by nekzuu, Jul 9, 2017.

  1. nekzuu

    nekzuu New Member

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    Hey guys,

    This is my first post to the forums and before I do so, I'd just like to say hey hey :D

    Anyway back to the point, I've recently picked up a '94 Holden VR Exec which wouldn't start due to the fact no fuel was travelling through the lines to the engine, and after a bit of digging around the ins and outs of the car and checking relays, fuses, wiring, power to the fuel pump etc I originally thought it was the fuel pump that had carked itself over the years, so I went out and got myself a brand new fuel pump and fuel filter in hopes the car would start. But my hopes were shattered once I cranked the car and no fuel was still coming through the lines (smh)

    Before I installed the fuel pump I made sure to check whether there was power getting to the fuel pump (which there was), but every time the car is put into accessories and I go to crank it the fuel pump doesn't want to whir! I tried bridging the connection (87 & 30) to see if the fuel pump would run with manual power and guess what, no luck.

    The only thing I can put my finger on right now is that my relay/fuse rail in the engine bay has poor wiring and its s*** itself, but I thought I'd get some second opinions since I really want my baby to start.

    Any help would be much appreciated boys and girls ;)
     
  2. nekzuu

    nekzuu New Member

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    UPDATE:

    Thought I would check if there's power in the relay itself (Pin 87 & 30), pin 87 has constant power and pin 30 has no power whatsoever, even when being cranked.

    I'm assuming it's the ECU not allowing the relay to turn on?
     
  3. losh1971

    losh1971 Well-Known Member

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    Does the engine crank over? If no then I have a pretty good idea what it might be.
     
  4. nekzuu

    nekzuu New Member

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    Yeah engine cranks over and wants to start, but just can't do it without any fuel pressure/fuel pump power hahaha
     
  5. wildfiremaint

    wildfiremaint Active Member

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    Hi nekzuu, If you bridge 87 and 30 in the relay socket as you said
    above then the pump should run as you have 12V on 87.
    I would check for 12V at the plug at the tank with the relay socket
    bridged. Sounds like open circuit in that wire to the tank.
    Also should check that you have a good ground at the tank for the
    fuel pump connection.
     
  6. losh1971

    losh1971 Well-Known Member

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    Could be the crank sensor
     
  7. BlackVXGTS

    BlackVXGTS Well-Known Member

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  8. wildfiremaint

    wildfiremaint Active Member

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    The fuel pump should prime for 2 seconds when you turn the key
    to reds. Fuel pressure must be there before you even crank it.
    As before - check 12V and ground at fuel pump connector at tank.
    The fuel pump needs both 12V and ground to operate.
     
  9. wildfiremaint

    wildfiremaint Active Member

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    Did you fix it ?
    If so let us all into the secret .
     
  10. nekzuu

    nekzuu New Member

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    After breaking my back day in day out, found out the wiring in my fuel sender/assembly has corroded and isn't allowing any power through, even when given direct power from the battery :mad::mad: hitting up pick a part tomorrow and hopefully all goes well, will keep you guys updated!
     
  11. wildfiremaint

    wildfiremaint Active Member

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    Thanks Nekzuu. Good work :)
     
  12. Jaydenchown

    Jaydenchown New Member

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    Hi I'm having this problem what was it that u think it would be
     
  13. Deuce

    Deuce Super Stock

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    Check battery terminals. Could be a dodgy connection.
     
  14. losh1971

    losh1971 Well-Known Member

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    If it's not turning over after trying what Deuce said then start by overhauling your neutral safety switch AKA NSS.
     
  15. Deuce

    Deuce Super Stock

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    Or start it in neutral instead of park.
     
  16. losh1971

    losh1971 Well-Known Member

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    That may or may not work. I have rarely had it start in N if the NSS has problems, but yes it can work sometimes. A wiggle of the stick around the neutral pos, while cranking will sometimes get you out of trouble as once off.
     
  17. Deuce

    Deuce Super Stock

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    I had issues in park. Sometimes pushing the shifter forward while cranking helped. But putting in neutral always worked.
    Not sure if was NSS issue or not though
     
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  18. losh1971

    losh1971 Well-Known Member

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    It's gonna be a process of elimination. On my VR I had three things giving me grief. I fixed the NSS because the reverse light were not working unless I wiggled the stick and had lots of cranking problems. Fixed the NSS and still had probs but a lot less. Then I replaced the sensor ring as that was causing probs. Better again but mine still has the occasional non-starting issue about every 10 starts. I have narrowed it down to the ignition switch. Once it gets real bad I will replace it. I find if you turn the key back all the way when it won't start and then turn the key fairly fast it will crank.
     
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  19. losh1971

    losh1971 Well-Known Member

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    Try your starter relay first. They are 17 bucks from GMH. I just fitted a new one and although I ca not confirm anything just get mine cranked over twice just now without any problems. Another thing i am wondering is if it may have also fixed my starter motor problem, whereby it used to make a weired sound like it hasn't disengaged. I will know for sure in a week or so once i can do three or four cold morning starts, plus a few random stats to see if the no crank has been sorted.
     

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