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View Full Version : reinstalled harness after cleaning up hacked up mess, not gettin spark

Coreylt1
08-11-2012, 06:25 PM
i just cleaned up my harness and removed all the crimp connectors and soldered everything nice and neat and reinstalled it, and i am now not getting any spark. no power to the icm, i cant figure out what it could be. did i forget to connect a ground? did i mess up some wires? please help. need to get this fixed asap so i can finally drive this monster.
LTb1ow
08-12-2012, 07:10 PM
So the pink wire feeding the coil has no power?

Ignition wise, everything is plugged in correctly?
Coreylt1
08-13-2012, 06:10 PM
So the pink wire feeding the coil has no power?

Ignition wise, everything is plugged in correctly?

i will check in a few mins about that pink wire, but one of the red wires going to the opti has power. which ones should have power with key on? and when cranking?
Coreylt1
08-13-2012, 07:00 PM
i will check in a few mins about that pink wire, but one of the red wires going to the opti has power. which ones should have power with key on? and when cranking?

no power to the coil. no power to the icm.
LTb1ow
08-13-2012, 07:01 PM
Did you check your ignition fuse?

Edit: Should be fuse 11 I think
Coreylt1
08-13-2012, 07:10 PM
Did you check your ignition fuse?

Edit: Should be fuse 11 I think

yes
LTb1ow
08-13-2012, 07:15 PM
Ok, well check to make sure you have power leaving that fuse, if so, you have a break somewhere. That fuse feeds the coil, ICM, and CPS.
Coreylt1
08-13-2012, 10:30 PM
Ok, well check to make sure you have power leaving that fuse, if so, you have a break somewhere. That fuse feeds the coil, ICM, and CPS.


so i tested the opti harness and the icm. the grounds ohm'd bad, so i made new ones. no luck.
Coreylt1
08-13-2012, 10:35 PM
so i tested the opti harness and the icm. the grounds ohm'd bad, so i made new ones. no luck.

do i need to have a ground to the block? i have the ground strap connected from the frame to the block, but is it necessary to have grounds connected to the block or should i be able to attach them anywhere to a good clean ground
LTb1ow
08-14-2012, 07:16 AM
From what I remember there are a few grounds at the head on an ICM stud, and then the ground strap to the frame from there. There is also a PCM ground on the passenger side of the block near the knock sensor.

Do you have voltage at the fuse and after it?
Coreylt1
08-14-2012, 09:42 PM
From what I remember there are a few grounds at the head on an ICM stud, and then the ground strap to the frame from there. There is also a PCM ground on the passenger side of the block near the knock sensor.

Do you have voltage at the fuse and after it?

will check the fuse tomorrow, forgot.

i did check the yellow wire on the opti harness, pin B . should be 2-4 volts when cranking. it was bouncing around but didnt go over 2.2 volts