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Old 02-13-2017, 09:04 PM   #1
red typhoon
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big stuff3 problems need help

Hi, guy. I was wondering if anybody has had this problem. I have big stuff 3 stand alone and my truck,it was working fine instill I tuck all my wiring, and after that my car doesn't want to send any signal from the bs3 to the injectors. I have check signal from the dist to the bs3 and I get a pulse of negative, but nothing out from bs3. what cable color is the one out of the bs3 to the injector, so I can check it to see if I have positive instead of negative. help would be appreciated.
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Old 02-13-2017, 10:20 PM   #2
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Re: big stuff3 problems need help

there is a injector ground wire.did you forget to reinstall it ? other than that your normal power wires and pink switch ignition on wires, unless you got and separate injector driver box. if iam not mistaken, been a while but key on there should be power on both sides of injector and in running or crank then it pulses on the big stuff 3. like I said been a while since I had issue with injector issues on big stuff so memory might be off lol
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Old 02-16-2017, 03:23 PM   #3
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Re: big stuff3 problems need help

I don't follow the system I have come the bs3 with the harness to install to the original plugs I don't see any ground can you elaborate more on were it goes.
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Old 02-16-2017, 03:24 PM   #4
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Re: big stuff3 problems need help

I don't have a separate injector drive
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Old 02-16-2017, 08:59 PM   #5
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Is this a piggy back harness to the factory harness or are you running a standalone harness?

If it's a piggy back harness, I would suspect you knocked something loose tucking your wiring.
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Old 02-17-2017, 02:02 AM   #6
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Re: big stuff3 problems need help

With your lap top hooked up to the truck can you see rpms when your cranking it over. Should see 300-400 rpm. If the Ecu doesn't see any rpm signal it won't fire the injectors. It will give you a idea where to start looking. I'm my case it is usualy a broken or coroded wire under the dizzy cap at the ignition module.
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