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Old 04-16-2018, 10:24 AM   #21
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Like alabama's first pic with the wiring diagram indicates, make sure the Fusible Links are good.
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Old 04-16-2018, 02:46 PM   #22
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I once had to repair some of the connections at the ECU under the seat. I had a couple pins with rotted wire in them. They pulled apart with a light tug.

Also, redo every ground connection you come across. If those get rusty, they can affect voltage to the ECU and sensors. Start with the one on the passenger fender, and then move to the ones inside, behind the kick panels,
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Old 04-16-2018, 05:19 PM   #23
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I'll go through all of that when I get home today and guys once again thanks for all the help and useful info this is my first Nissan and I'm sure I'll get it going right it's just so different from everything I have I keep second guessing myself
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Old 04-24-2018, 12:59 AM   #24
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I finally got a chance to check all of the ecu wires in that and everything checks out ok but should I have power on all four wires going to injectors
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Old 04-24-2018, 01:33 AM   #25
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Got a pic of the wires you checked???
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Old 04-24-2018, 01:39 AM   #26
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What do you mean
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Old 04-24-2018, 10:50 AM   #27
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I don't have a 1986 or a 4 cylinder engine, and my engine does not have a throttle body.

I don't know what wires you are measuring.

Is there any kind of way you can indicate to me what wires these are? You know, like take a picture showing where they are in relation to other engine parts.
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Old 04-24-2018, 03:15 PM   #28
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I'm at work right now but I can later
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Old 04-25-2018, 05:42 PM   #29
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The wires are coming out of the top of the throttle body but I've read that the injectors pulse by the ECM sending a signal to ground the injectors so I guess all four wires should have power to them now I'm thinking maybe bad ECM or possibly bad maf sensor which I hope it's not either cuz new is kinda expensive and I can't find any used parts around here
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Old 04-25-2018, 06:20 PM   #30
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If you do not have power, this pic from the 1986.5 Service Manual shows your fusible links are dead.




You probably don't need it, but here's the way the injectors get the signals to fire:




Last, here is the wiring schematic going to the injectors (yeap, 4 wires):




I hope that helps.

If not, maybe someone else with a 1986.5 can offer some input.
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