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Help..... We broke it :(

Discussion in 'VB - VK Holden Commodore (1978 - 1985)' started by NORTI, Jul 23, 2006.

  1. NORTI

    NORTI Crazy VS lady

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    Can some one tell me what colour the wire is in the loom for the fuel pump???
    (VKC EFI202)

    Think we nicked it accidently & Im goin to have to find the damage or try & rewire something around it???


    Any ideas???





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  2. 308vkcalais

    308vkcalais DIO..

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    Fuel Pump Wiring Loom Colours

     
  3. NORTI

    NORTI Crazy VS lady

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    so ya wanna come to my place & help???? lol




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  4. NORTI

    NORTI Crazy VS lady

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    K the story is, finaly decided to fix my stereo/brake light problem by running a new powerwire straight to the battery.

    Also fuel pump has been playing up ever since I got the car, quick bash with whatever I have handy fixes it & Im on my way.

    Now.... problem..... did we damage the wiring by accident yesterday when running the wire for stereo thru the firwall..... or has the fuel pump picked now to die properly????


    Car starts & dies, cant hear the pump at all. Checked fuses & relays.


    I guess what I am asking is do you think its the pump? Or is it a wiring problem... IE pump not getting power now??



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  5. Pub247

    Pub247 Well-Known Member

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    I'd sat its the pump as the wires don't run through the firewall. I THINK they run along it to the efi relay and into the fuse box you could use a test light at the fuel pump end to check to see if there's power there if there's power then it more than likely be the pump
     
  6. vkberlina

    vkberlina VK Madman

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    Ok the positive wire for the fuel pump is Violet, test it with a spare light globe, testlight or multimeter etc

    cheers
    Scott
     
  7. NORTI

    NORTI Crazy VS lady

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    yep found that out this arvo lol


    now just trying to hook up a switch, so it will fix pump & give me an imob at the same time



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  8. NORTI

    NORTI Crazy VS lady

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    okies, I know there is a thread here somewhere about checking fuel pressure?? Tried searching & I think all that petrol has affected my brain. I cant find it. Link me please???


    ***Update*** - Wiring defintly ka-put..... so new wire & yay have pump making all the right noises.... But car still not going :( - Suspected that maybe this damage was the last straw for dodgy pump & have now replaced it.

    SAME PROBLEM..... I dont think it is getting fuel still... ??? Fuel pump sounds as if its working, but as I said still not seeming to get fuel to keep it going :(



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  9. V3N0M

    V3N0M New Member

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    " according to the Bible(Gregory's Manaul) " teehee i like that ^_^
     
  10. Goon

    Goon Scientific Tuning

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    There could be something earthing out after u installed the new wiring.

    Maybe you might have shortern something out.

    I can read that your fuel pump has been a problem for you in the past, but have u considered installing a new pump or buying a repair kit?
     
  11. NORTI

    NORTI Crazy VS lady

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    new pump in, same problem still.




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  12. Goon

    Goon Scientific Tuning

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    Maybe its your mixer screw if it has one, thats if you've had this issue since day one of the car and you have as i can read, shes could be out of a tune a bit with the fuel side.

    Just trying to help :)
     
  13. NORTI

    NORTI Crazy VS lady

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    but car ran just fine. Occasional thumps needed on the pump & she ran fine again. Why would mixer screw no cause her not to start at all??

    Basicaly, I want someone to tell me what other wiring I have damaged along with the fuel pump ?



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  14. NORTI

    NORTI Crazy VS lady

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    Next post will be in the wrecking section..... Ive had enuf of this really, driving me nuts....




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  15. Goon

    Goon Scientific Tuning

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    I was thinking of the mixer screw to be something like the level of fuel being allowed into the engine and to burn.

    Now i think a wire as came lose and the connection isnt good enough when u installed the new wire, if u used your hands and not a coat hanger to thread the wire pass certain areas, then maybe so...
     
  16. 308vkcalais

    308vkcalais DIO..

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  17. Pub247

    Pub247 Well-Known Member

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    Do you have spark? I remember i had a problem with my old efi i thought it was the efi relay turns out it was new coil decided to pack it in. When you crank it do you get injector pulse? (plug a test light into injector plug) You could try unpluging the fuel rail turn the keys on acc (i think) and see if the pumps pumping fuel up to the motor. Have you considered a blocked fuel line? Does it just wind over with no signs of starting? if you got no pulse might be the relay or maybe efi unit but i don't know if you can fry one of these
     
  18. NORTI

    NORTI Crazy VS lady

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    its starts, then dies. So me thinks no fuel is the issue lol. Tried checking volume at the end of the fuel rail, no fuel at all :(

    Thats when new pump went in.... still same :( so injectors not working maybe? Car still starts, then dies.



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  19. Pub247

    Pub247 Well-Known Member

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    The way it works i thimk if you don't have have pulse the car won't start so if it starts and dies then i'd say you got spark, pulse and compression(we'll assume that) so you need fuel. With ignition on you can hear the fuel pump like a low buzz droning? It's got fuel in the tank i assume? maybe a blocked line? try blowing into the line and have someone listen for bubbles in the tank (hold on that won't work) try unplugging it at both ends and put compressed air or something through it.
     
  20. NORTI

    NORTI Crazy VS lady

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    yeah rewired up new power for the fuel pump, definetly making all the right noises, both the old pump & the new one just fitted.

    Car was running fine, we turned it off, disconnected battery, ran a new power wire to battery thru firewall, re-connected battery, & problem!!!!!

    So heres where I think its all in the wiring, cus thats the only thing that could have casued this surely? We must have damaged something when putting new wire thru the firewall :( I drove it not 30mins before this happened!



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