Vibrating sound going 20mph - Ford Explorer Forum - Forums for Ford Explorer Enthusiasts
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Old 09-20-2017, 10:21 AM   #1
i3ioi-iazard
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Vibrating sound going 20mph

I have a weird vibrating sound that ONLY happens going 20mph. As i go faster it goes away and becomes a hum and gets louder with speed.

2003 Ford Explorer Eddie Bauer 4.6L 4x4
What I have changed:
Rear wheel bearings (Both sides)
Rear axles (Both sides)
Swapped rear ends with my other ford which I can confirm had no hum or noise.

When I turn left the sound goes away including the hum at 20mph. The front end looks okay and it doesn't sound like a front wheel hub as it wouldn't (at least thats what i think) cause the heavy vibration at 20mph. Does anyone have any suggestions or personal experience on what else it could be?

Thanks in advance!

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Old 09-20-2017, 02:11 PM   #2
J_C
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Have you tried rotating the tires to see if the vibration follows the tire?

You've done that rear end work but for it to go away when you turn left, and considering the rear end work already done, makes me suspect it's a front end issue rather than rear. Are you certain the noise is coming from the rear?

Is it possible the vibration is unrelated to the hum, that the hum is just aggressively treaded tires that had their compound harden a little? This is somewhat common on AT or MT tires once they're a few years old, or were old stock to start with.

I agree that a front hub doesn't seem likely with only a 20MPH vibration.
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Old 09-30-2017, 04:07 PM   #3
Mike754
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Really sounds like driver side front hub. Turning left would take the pressure off that wheel and make the sound go away.
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Old 09-30-2017, 04:34 PM   #4
J_C
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I don't suppose you tried rotating the tires to see if the vibration follows the wheel?
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Old 10-04-2017, 05:03 PM   #5
AMTDave
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I would check all wheel bearings, And cv joints.
I have had this in the past on other cars.
( can't remember what it was )

But I had the back hatch open and my head hanging out...
Pull to the left woman... no your other left.

Sounds like a wheel or bearing issue.
But sounds are a funny thing, they travel.

40 years as an aircraft wrench twister, longer working on cars.
You see some wild stuff...

The old dodge colt had a strange noise when you turned the heater on.
Then one day the wife said there is a mouse living in the car.
After that it was called "The Mouse Mobile"

Come back and let us know what you find.
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