I was driving down the highway and all of a sudden the engine starts to make a popping sound. I pulled over and raised the hood. The #3 spark plug had blown out from its seating in the cylinder head. I had the truck towed to the dealer and they replaced the cylinder head. This is a known problem and could be very dangerous because of the location of the fuel injection rail. The sparkplug is located directly below the fuel rail. If the spark plug comes loose and it flies into the fuel rail, the rail could burst causing fuel to spray inside the engine compartment igniting a fire. The spark plug problem was taken care of by Ford, however nothing was done to guard the fuel rail.

- Nashville, TN, USA

Two days after truck purchase, reported to dealer truck has bad vibration, rough idle, pulls to the right, truck hesitates to go into gear, truck hesitates before shifting, engine knock and clunk in T-case area. Transmission has been replaced twice, road forced balance 4 tires, switched tires and wheels, front end alignment three times, torque converter replaced, crankshaft pully replaced, dampers installed for vibration. All problems still exist. Ford has offered to buy back the truck but they will not give me all of my money back.

- Reno, NV, USA

Harmonic vibration starts at 40mph and occurs again at 65-70mph. (tiresize: P235/R16)

- Plant City, FL, USA

This was 2nd transmission failure; both times the transmission fluid sprayed under vehicle & tires, making vehicle slide on road. Both transmission and drive shaft were replaced; tech stated the rear seal had blown.

- Henderson, NV, USA