Losing spark on first and fourth cylinders

[AustinGST98]

hello, i know this problem has been addressed before but no solution has fixed it. For some reason, every fix i have made works at first until the problem persists again. I keep losing spark to the first and fourth cylinders, and whenever i replace something, i.e the coilpack, CAS, etc, it seems to run fine for a few minutes and then yet again i lose the spark and the car doesn’t run right. I’ve even tried multiple ecu’s and it’s the same issue. Any ideas?

 

[ohlegend]

Have you tried replacing the ICM?

 

[curt-s]

have you validated wiring and especially connectors are good condition, clean of corrosion, and not busted inside? mine were.. took a dental pick to find out the connector on the harness side split in two and every so often would lose conductivity.

 

[AustinGST98]

Haven’t had the time to evaluate everything with school, as i’ve hardly been home,
Just had a week for break. Unfortunately the harness is pretty hacked and i feel that it might be the issue at hand. For example, one of the wires plugged into the coil pack was snipped and tied into another wire, which i haven’t had a chance to follow and evaluate, but the car was running fine up until recently. Do i risk putting in a different transistor or is the best case to try and unhack the previous owner’s wiring?

 

[AustinGST98]

Maybe the bubblegum or whatever he used to keep the wires together is starting to peel apart

 

[AustinGST98]

Not really sure what he was doing here, any ideas?