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Classic fast injector output

Discussion in 'EFI Tuning Questions and Engine Management' started by Turbomonte, Nov 18, 2011.

  1. Turbomonte

    Joined:
    Oct 26, 2011
    I'm using a classic fast sequential box on my 383 sbc with twin 52mm. I an not getting a signal to my#1 injector. The wire is good all the way to the box, so I'm pretty sure it is the output not working. It is output x1 an orange wire. Is there anyway to correct this issue our am I screwed? Thanks for the help
     
    Turbomonte, Nov 18, 2011
    #1

  2. Drac0nic

    Joined:
    Feb 28, 2005
    This may sound like an off the wall suggestion, but are there any TV repair shops locally? If you have a harness with the ability to hook it to a bench supply and a pin out it is very likely they could diagnose and fix it for you. Provided you found the right person to work on it. The only other real question is availability of parts if it's old. My guess is one of the drivers burned out which could be as simple as a Darlington transistor/FET worse case scenario is the output pin of the CPU is burnt out and then you're probably screwed unless the EPROM is separate on the board. I have never cracked one of these open though so I do not know how they are designed.
     
    Drac0nic, Nov 18, 2011
    #2

  3. Turbomonte

    Joined:
    Oct 26, 2011
    Fast actually told me that they would look at it but they prob dont have the parts to fix it anymore. just a off the wall question but if it cant be fixed would the injector output be able to handle two injectors? if i am screwed i was wondering if i could tie the ground signal in with the #2 injector, i know it will fire a little early but im not useing any cylinder correction so that would be better than not firing at all or buying a new box for now. Do you know if it can handle it? using bosch 160 injectors. only about 4.5 ohms each
     
    Turbomonte, Nov 19, 2011
    #3

  4. Turbo Terror

    Joined:
    Mar 14, 2009
    Ask Craig smith to take a look at it I know he still has a lot of parts and he's working on mine right now
     
    Turbo Terror, Nov 19, 2011
    #4

  5. Craig Smith

    Joined:
    Sep 17, 2003
    I just responded to a PM on another board that I am assuming is this same case, and I can help. I have an inventory of the proper injector drivers for this system and I can fix it. They are peak/hold drivers so improvising another solution probably wouldn't be a good fit here.

    And Turbo Terror your sequential conversion is almost done :)
     
    Craig Smith, Nov 20, 2011
    #5

  6. Turbo Terror

    Joined:
    Mar 14, 2009
    Woohoo just have to time the cam sync and get some good fuel in the tank now!!!
     
    Turbo Terror, Nov 20, 2011
    #6
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