when I hit speed between 60-80 kilometres I hear and feel a noise under my feet. what can this be?RESPONSEwheel balance issue. Swap out the front tires with the rear and see if it changes.Related Questions2004 Ford Expeditionhow to change the starter? Cannot remove top bolt from starter.2004 ford expeditioneven after it's warmed up it makes high pitched whistling noise off and on for a while. what do you like it might be.2001 ford expedition4.6 has developed a slight hesitation and miss. Last time this happened it was one of the individual plug coils. Could this be the same problem and if so are these coils easily changed by a shade tree mechanic?