2013 F-150 5.0 running rough
2013 F-150 5.0L 2WD Got a CEL and took it to parts store and their OBDII reader said cyl # 7 misfire. Truck seemed to run fine and it went away pretty quickly, so I just disregarded it. About 3...
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patperry2766 wrote:
125K, The CEL wasn't on when I replaced the coil, it had been off for about 2 weeks. I figure that was enough restart cycles to clear anything in the system. Hasn't thrown a CEL since I replaced coil about 2 weeks ago.
I keep vehicles till the wheels fall off so I'm usually pretty good about taking care of stuff.
I'm with Jerimiah above... Make sure you use a Motorcraft coil. Equivalent is fine (Napa Echilon, Denso, etc). Most parts store grade coils are not equivalent.
125K is long time to run the OEM plugs is that was the 1st changeout. Doing this can damage coils, which can cause other cylinders to run weak besides the one you changed. The best way to continue with diagnosis (assuming other PM work is up to date, like fuel filter and PCV valve) is to run a cylinder contribution test. Which requires a diagnostics terminal or laptop connection.
