Quote:
Originally Posted by S14rebuild
Check coil packs, ignitor
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Did some more testing today whenever this is occuring only cylinder 4 is sparking. 3,2,1 are no longer sparking. So the engine is only running on cylinder 4. This cutout typically happens during higher rpm like past 3k itll just suddenly cut out and start running on cylinder 4. I can wait a while to restart the car and itll run fine on all 4 again. This cutout will only happen after the car has ran for a bit, when it is cold i can rev it to anything and it will be fine.
Is this pointing to a bad ignitor? Or bad ecu?