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Going crazy

Discussion in 'VT - VX Holden Commodore (1997 - 2002)' started by Agey20psi, Sep 15, 2019.

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  1. Sep 15, 2019 #1
    Agey20psi

    Agey20psi New Member

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    hey i own a Vx v6 supercharger it keeps stalling cutting in and out while I drive um I have changed inlet manifold/supercharger gaskets,new crank angle sensor,new idle sensor,new throttle position sensor,new fuel pump,new fuel pump module,checked all vacuum hoses now I’m loosing my mind the car won’t even turn over fuel pump not coming on changed ecu bcm (paired) checked relays and fuses the crazy thing is I can get it to turn over if I pull relay out and hot wire fuel pump dose the same
     
    Last edited: Oct 27, 2019
    Agey20psi, Sep 15, 2019
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  2. Sep 16, 2019 #2
    VT2Commie

    VT2Commie Active Member

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    Have you checked the wiring? Diagnostics?
     
    VT2Commie, Sep 16, 2019
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  3. Sep 16, 2019 #3
    Trevor loves holden.

    Trevor loves holden. Well-Known Member

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    You will have a new car soon, all you need now is 02 sensors, dfi, coils, plugs and leads, maf fuel pressure regulator. If that fails bcm and ecu. Check your dfi wire harness and earth leads battery terminals, clean and check fuse box and relays.
     
    Last edited: Sep 16, 2019
    Trevor loves holden., Sep 16, 2019
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  4. Sep 16, 2019 #4
    _R_J_K_

    _R_J_K_ Well-Known Member

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    _R_J_K_, Sep 16, 2019
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  5. Sep 17, 2019 #5
    Trevor loves holden.

    Trevor loves holden. Well-Known Member

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    Get the plug checked that goes into the DFI plate. Others had the same issue on and off for weeks. Replaced Crank sensor, DFI plate, coils and that didn't help. Read somewhere that the plug can sometimes have a pin which is corroded or slightly bent. Lo and behold when they checked It they found it had a slightly bent pin(very hard to notice). push the pin out and replaced it they haven't had a problem since :) Best to get and auto electrician to do it.
     
    Trevor loves holden., Sep 17, 2019
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  6. Sep 17, 2019 #6
    KustomKulture62

    KustomKulture62 Active Member

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    What are the codes saying?
     
    KustomKulture62, Sep 17, 2019
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  7. Sep 18, 2019 #7
    Agey20psi

    Agey20psi New Member

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    Wat do u mean fault codes,every time I start it the trac off light comes and so I push trac button but nothing changes
     
    Agey20psi, Sep 18, 2019
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  8. Sep 18, 2019 #8
    Agey20psi

    Agey20psi New Member

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    Agey20psi, Sep 18, 2019
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  9. Sep 20, 2019 #9
    _R_J_K_

    _R_J_K_ Well-Known Member

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    What kind of spark plugs are in it? Did you up the boost at all?

    When you say cutting in and out do you mean like it's missing or turning on and off completely?
     
    _R_J_K_, Sep 20, 2019
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  10. Sep 25, 2019 #10
    Agey20psi

    Agey20psi New Member

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    Hey um yeh I did up the boost only for a day or two n I mean on idle it will will rev up and down then stall and it’s weird sometimes the trac off light comes on with out me turning it off and then I catch switch it on or off n spark plugs are platinum
     
    Agey20psi, Sep 25, 2019
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  11. Sep 26, 2019 #11
    Trevor loves holden.

    Trevor loves holden. Well-Known Member

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    Alternator not over charging is it? Checked your DFI plug yet? Maybe a crook CAS not the first time a new one failed. Have you checked your injectors for constant power and ohms to see all within range with each other? Any Christmas light at night time from plug leads? Are your coils good?
     
    Trevor loves holden., Sep 26, 2019
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  12. Sep 26, 2019 #12
    _R_J_K_

    _R_J_K_ Well-Known Member

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    Got a part number on those plugs?
     
    _R_J_K_, Sep 26, 2019
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  13. Sep 27, 2019 #13
    Agey20psi

    Agey20psi New Member

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    When u say alternator over charging would that make the computer (ecu) run hot
     
    Agey20psi, Sep 27, 2019
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  14. Sep 27, 2019 #14
    losh1971

    losh1971 Well-Known Member

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    What gaps you running? SC needs high voltage coils or smaller gaps than an Eco.
     
    losh1971, Sep 27, 2019
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  15. Sep 27, 2019 #15
    Agey20psi

    Agey20psi New Member

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    Bosch R6 HR8DPP30V
     
    Agey20psi, Sep 27, 2019
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  16. Sep 27, 2019 #16
    Agey20psi

    Agey20psi New Member

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    Wat size gaps? and I did order s/c coils but whose to say that’s wat I got thanks man
     
    Agey20psi, Sep 27, 2019
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  17. Sep 27, 2019 #17
    losh1971

    losh1971 Well-Known Member

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    Plug gaps
     
    losh1971, Sep 27, 2019
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  18. Sep 27, 2019 #18
    Agey20psi

    Agey20psi New Member

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    Lol yeh wat size should the plug gap b then
     
    Agey20psi, Sep 27, 2019
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  19. Sep 27, 2019 #19
    losh1971

    losh1971 Well-Known Member

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    1.3mm.
     
    losh1971, Sep 27, 2019
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  20. Sep 27, 2019 #20
    losh1971

    losh1971 Well-Known Member

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    If the gaps are incorrect don't try and regap them now they have been used in the engine, grab a new set of plugs. Gapping used plugs is fraught with danger, the ground straps can snap and destroy a piston.
     
    losh1971, Sep 27, 2019
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