WHILE DRIVING ON THE INTERSTATE OR FWY AT ABOUT 55-60 MPH - I START TO INCREASE IN SPEED, WHILE GOING WITH THE FLOW OF TRAFFIC MY EXPEDITION EDDIE BAUER MODEL SPURTS/HESITATES/LOSES POWER "BUT NEVER CUTS OFF" EVERY TIME BEFORE THE SPEED INCREASES. WE TOOK IT TO THE FORD DEALER SEVERAL TIMES AN THEY ARE UNABLE TO DETERMINE WHAT IS WRONG WITH THE VEHICLE. THE FORD DEALER TOLD US THEY CAN'T DO NOT ABOUT IT UNTIL THE ENGINE LIGHT COMES ON. WE SUGGESTED TO THE FORD DEALER THAT IT MAYBE THE FUEL FILTER OR O2 SENSOR BUT THEY TOLD US THIS MODEL VEHICLE DOES NOT HAVE A FUEL FILTER AND OUR O2 SENSORS ARE GOOD. MY ISSUE IS WHY SHOULD I HAVE TO WAIT TILL THE VEHICLE BREAKS DOWN WHEN IT DOES THIS ALL THE TIME. *TR