On the 3.9L V6 and 5.2L V8, rerouting the ignition coil wire and spark plug wires can help solve a misfire and/or surge problem that occurs at approximately 45 mph. A service bulletin was published that outlines the specifics of the repair. It states the rerouting procedure should be performed before other repairs are done for misfires, surging or spark knock.
Rerouting Ignition Coil/Spark Plug Wires Can Solve Misfire/Surge Problems on Dodge Ram Van B150
Average mileage: 198,000 (198,000–198,000)
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1 spark plug black all others are burning clean.