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02 Nissan coil trigger weirdness

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2 years 2 months ago #63470 by Streetwise guy
02 Nissan coil trigger weirdness was created by Streetwise guy
2002 1.8 Sentra, misfire cylinder 4.  No trigger to the ignition coil, other cylinders are good.  Moving coils made no difference.  Pull the ecu, check connections and resistance of trigger wire, all checks good.  Reconnect ecu, back probe wire at coil, connect my old vantage scope, and it picks up a signal and starts running. Disconnect scope, or let it time out, and the misfire returns.  Looking for an ECU, I presume.

Good old Nissan...

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