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.
Car Problem Reports
Dodge Ram 1500 Rerouting Ignition Coil/Spark Plug Wires Can Solve Misfire/Surge Problems
Dodge Ram 1500 Problem
Exhaust & Emissions Affected: 5.9L V8
Average Mileage: 197,100 mi (164,200 mi - 230,000 mi)