Thread: still not firing

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  1. #1 still not firing 
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    has no spark, tested the icm- still good, coils packs are good, wires good, new plugs, new crankshaft senor, new camshaft senor, still no fire

    used starting fluid and turned on, but ran rough, showed code and it said multiply random misfire

    any thoughts at what this could be
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  2. #2 Re: still not firing 
    GTX Level Member DanGTP's Avatar
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    Check to see if the fuel pump is coming on. What year and model is your car?
    ~
    '97 GTP: 9.5:1 Diamonds, P&P Everything, XP, SSIC, GenV, Shiny Headers, 3.29's, HPTuners, E85
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  3. #3 Re: still not firing 
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    yea its on, i have fuel pressure to the fuel injectors but they aint putting fuel out, i think it might be the ecm, but idk yet

    its a 2006 grand prix, base model
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  4. #4 Re: still not firing 
    GTX Level Member DanGTP's Avatar
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    If the injectors aren't firing, rent a NOID light set from AZ and see if they're getting a signal. If so, the injectors are dead (can happen from a voltage spike). If you're not getting a signal, check the wires through the harness. Could just be a ground wire loose.

    If all pieces check out individually, about the only thing left is the injector driver in the PCM.
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