LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

no voltage going to ign module

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Old 09-23-2007, 03:18 PM
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no voltage going to ign module

everything checks good coil, new wires, plugs etc.


I have no voltage going to my module, what do I check next? Is it a possible pcm problem
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Old 09-23-2007, 03:33 PM
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How about the ignition fuse? It feeds the pink wire to the coil and the ICM.
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Old 09-23-2007, 03:48 PM
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Originally Posted by shoebox
How about the ignition fuse? It feeds the pink wire to the coil and the ICM.
fuse has power going in and out......, I have power to my pink coil wire
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Old 09-23-2007, 04:19 PM
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Better scope out the wiring harness, then.
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Old 09-23-2007, 04:36 PM
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pplugged another opti to it, now I have voltage to terminals 1 and 3 so something in the otpi is bad, also has spark when I spin it. I guess something on the low resolution side? Also now the air pump cuts on so thats what i'm guessing.


Let me go put this on and see what happens. Thanks
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Old 09-23-2007, 05:39 PM
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I just got the opti on, started it and it knocking like a MF......oh well. Pull the motor out now







junk lt1's
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Old 09-23-2007, 10:43 PM
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I'm in the same slow boat.

I just put a new coil metripack pigtail on the harness today.

I had voltage on the pink but not the green.
I found out the green was broken inside the plug by only accident.
I left the multitester on the ignition module green and bumped the coil plug and the voltage went to 0. Bump again and voltage comes back.

Serious pita LT1.
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