The front end sounds like it is coming apart with vibration noise at 55+ mph. The noise goes away when you keep some pressure on the gas pedal. The 2003 Ford Exploer has 91k miles.......Any ideas?

Put it in neutral when going 40 to 55 mph

If the noise goes away, you have a 75% chance your
going to rebuild the trans

Harmonic balancer.

I would look at the half shafts or cv axles.

bent tyre or dish rim, check tyres and rims and speed balance would help.

COULD HAVE LOW AND HIGH SPOTS IN THE BRAKE ROTORS.CHECK TIRES FOR DEFECTS.COULD NEED FRONT END ALIGNMENT OR BAD WHEEL BEARINGS CAUSE WHEELS VIBRATION.

sounds to me like you might have a bad tierod end or bad ball joint

i would suspect somewhere in your front end you have a compliance bushing with excessive movement. these cars front ends depend heavily on these style bushings, and as they wear you can start to see tire wear patterns, looseness in steering, and high speed vibration. make sure you have the front end inspected by a shop that is familier with these types of cars. good luck!

Your noise sounds like it is power train related,If you have eliminated the engine,Since it doesn't make the noise while moving and in neutral.
It sounds like a universal joint in the drive shaft.Do you notice a vibration
along with the noise?

I had a similar problem. The dealer change automatic transmission and differential, but the noise continu. After research on internet i think the problem is the front galiper who create a vibration on the disc wheel and the vibration frequence follow the front axle until interior car. Just press slowly the brake pedal and if the noise stop , that's it the cause i think. I dont change my galiper, but i have a new transmission . :)))

It sounds as though your car has two seperate problems. The first problem with the vibration that goes away when you let off the gas pedal is caused by a bad INNER CV joint. It only vibrates when you are accelerating because that is when the joint is under stress. Your vehicle has two axles, each with an inner and an outer joint. My suggestion is to have a competent shop determine which is the bad side and replace the entire axle. The second vibration which occurs at any speed is most likely cause by either a bad tire, or a bent rim.