After checking all the sensors and relays, fuel, replacing the timing belt (just because) spark plugs, coil packs, cam crank sensors replaced, alternator replaced, map sensor replaced, all fuses checked... Driver side 2 and 4 are not producing spark, but 1 and 3 are, when cranking the engine. How is this possible the one bank is sparking and the other not? Is the ECM directly responsible to allow the spark? Better yet from the coil pack back to the ignition is there anything that interrupts one side over the other? It would appear the 2 banks are separated somehow... Maybe this is where the problem lays? If so, where is this where? One last thought can the brown relay behind the kick panel on the passenger side be the suspect. I'm thinking only one half internally is functioning causing the one side sparking and the other not?
Feb 11, 2023 at 11:20 PM
