I'm stuck and need help with spark situation!!

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duffman1278
Posts: 6816
Joined: Sun Apr 01, 2007 3:09 pm
Car: 89 240sx Hatch, the wildcats!

Post

So I had a friend crank my engine and see if their was spark, well there's nothing from any one, than I checked the voltage to each coil pack and the first two up front were getting about 1.4V while cranking. HOWEVER the 2 coilpacks in the back were not getting any Voltage at all. I checked the coilpack wire harness and theres continuity. Than I checked the wire harness to the ECU and it doesn't look like any of the wire harness wires are loose or broken. What else could it be?? I'm not getting any spark. Ignitor works, ECU is good, CAS was replaced.


silvia-junkie
Posts: 117
Joined: Mon May 02, 2005 9:37 am
Car: s14 kouki

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check your ignitor

duffman1278
Posts: 6816
Joined: Sun Apr 01, 2007 3:09 pm
Car: 89 240sx Hatch, the wildcats!

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I did check the ignitor, I even tried 2 different ones. There good, and voltage goes through.

silvia-junkie
Posts: 117
Joined: Mon May 02, 2005 9:37 am
Car: s14 kouki

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did you do voltage drop tests or just a continuity test?

blinker_fluid
Posts: 303
Joined: Mon Feb 19, 2007 4:21 pm
Car: 1991 Nissan 240SX FB
2000 Nissan Maxima SE

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Did you check the ground for the ignition harness in the back of the head? If thats not it and there's no spark to any cylinder then its possible that the fuse for the ecu is bad or the ecu itself may need to be replaced. Try swapping a different ecu or check your harness again.

duffman1278
Posts: 6816
Joined: Sun Apr 01, 2007 3:09 pm
Car: 89 240sx Hatch, the wildcats!

Post

Yea I just made a new ground connection yesterday, but didn't try it out, but the other one was connected straight onto the block. And yes I did a voltage drop test and continuity. I'll probably have to test someone elses ECU, or harness, if I can find someone.


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