Repair shop switched out the coil packs from Cylinder 1 - 2 and Cylinder 1 isn't getting a spark. The shop doesn't have expertise to take it further. Should I replace the wiring harness in the engine, or check something like the crankshaft sensor? The car runs rough, but still runs. Can anyone advise me?
It might be the harness or its connector. If no problem there, its ECU ... as it has the drivers for coilpacks. Then u need 'new' ECU from junkyard
-or- smbdy able to replace/solder drivers on ECU pcb. Via link below you may find FSB's containin compatibility serial numbers for replacement ECU's
First check that ECU gets full voltage. see
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