I have a00 Explorer V8AWD 5.0L Engine and I am having a problem that no one can seem to solve. When driving the SUV after a few minutes of warm-up the truck starts to hesitate and jerk on acceleration between 40mph-55mph. It gets worse going up hills. Also, I have noticed a slight loss of power. No CEL light has shown up yet either. I have changed the spark plugs, had the fuel injector checked and cleaned, had the PCV valve and the fuel filter changed. replaced coil twice. If anyone has an idea what is causing this problem, please respond?

 

The 5.0 Explorers had many problems with spark plug wires, and the misfire will not always set codes or CEL.