Mechanics

FRONT END NOISE

2004 Ford Explorer • 6 cylinder 4WD Automatic • 104,000 miles

Have a 04 ford explorer gettin a loud humming from front end replaced the front differential did both upper ball joints did front u joint and its still there the noise is loudest from 25 to 40 mph and does not change when turning idk about to lose it on this truck really is becoming a huge issue
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Steve112243
February 6, 2011.




Real common for the wheel bearing to make a noise like an airplane engine. The problem is on vehicles with bolt-on style hub assemblies, it is impossible to tell which one is noisy. It can sound like the noise is coming from the right side and still be the left one that is bad. The good news is if you replace the wrong one you can put the old one on the other side.

To tell or sure which one is noisy, raise the truck so all four tires are off the ground, then run it in gear and 4wd. Listen next to each bearing with a stethoscope. You'll be able to tell the difference between the one that sounds a little noisy and the other one that is REALLY noisy.

Caradiodoc

Caradiodoc
Feb 6, 2011.
I have also noticed a little clunking sound at a lower speed that another sign of a hub going?
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Tiny
Steve112243
Feb 7, 2011.
Typically not. That would be something a ball joint or tie rod end would do. If you don't hear it when the steering is turned to either side, you might suspect an anti-sway bar link. Turning puts a twisting force on the anti-sway bar and momentarily stops the links from rattling.

Caradiodoc

Caradiodoc
Feb 7, 2011.

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