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Hello all, this is my first time posting here. I have searched and searched the internet & ABOUT.COM looking for a solution to my problem but nothing has helped yet. Now to the problem;
I have a 1993 Ford Explorer XLT 4WD and for the past few months there has been a humming comming from the front of the vehicle on the passenger side. I could swear the noise is from the tire. It sounds like a humming or even comparable to the sound of a plane flying over-head. At first I thought it was the road as it gives an impression of cracks in the road. It has slowly gotten louder and it happens when we are moving. At slower speeds it's not so loud but the faster we go, the louder it gets. It doesn't matter if we hit the gas or not, just how fast we are moving. My wife and I agree that the sound is ONLY from the passenger side in the front. We can also feel a vibration under the floor on the passenger side which again, gave us the impression of going over cracks in the road. Does anyone know what this could be? I really don't have ANY money to take it to get looked at because we are in the process of moving right now. Please help!!!
Not sure when the bearings were last done, I just bought the Explorer about 7 months ago. And I shouldsay that the sound is actually more like a ROARING than a HUMMING. Actually sounds like an AIRPLANE taking off. The sound is not quiet either, it's quite loud. Also, the more weight that is put on that side of the vehicle (more people) the louder it gets.
The problem with my automatic hubs was that there was excessive wear and that had caused metal particles to shave off the gears. The particles were causing a clicking kind of hum in the ratchet in the hubs. The only way to fix that (for me) was to get new hubs.
Also, look and make sure that the hub has disengaged. Most recomend that the hubs should be cleaned and relubed at least twice a year. Raise the right tire off of the ground and spin it while looking to see if the shaft is turning also. Should not be if not in 4WD.
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