coil
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2005 Expedition: 40mph shudder, low mpg, stall
I've had a few issues pop up lately - going to try to explain in chronological order. Things to know: The truck runs amazingly well (smooth and powerful), trans shifts great, no real issues. 230k on the odometer. 4R75e, 4wd, towing package. Plugs 50k ago, Trans-pan fluid and filter 50k ago...- booksix
- Thread
- coil cop shudder stall torque converter transmission
- Replies: 6
- Forum: 2nd Gen - 2003 - 2006
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2017 3.5L V6 - Misfires While Accelerating
I got this truck 2 months ago with 50k miles on it. About 3k miles later, I started noticing misfires or "pinging" in two situations: (a) when accelerating at highway speeds, like while passing, and (b) when climbing hills. Eventually I had enough misfires to trigger a persistent Check Engine...- chrono
- Thread
- coil misfire plug
- Replies: 20
- Forum: 3rd Gen - 2007 - 2017
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COP (coil) mystery?
In the past year I have had to replace the coil on cylinder 7 of my 5.4L 2007 Expedition three times. It begins with a stumble when accelerating which sets off a misfire on cylinder 7 code. I replace the coil and the engine runs great for a few months. I have also replaced the wiring connector...- Texas Dave
- Thread
- coil cop misfire
- Replies: 2
- Forum: 3rd Gen - 2007 - 2017
