Loud humming noise from front end of Durango 4 x 4

Humming Noise Front End- Any Ideas? - Ford Explorer and Ranger ...

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Dec 18, 2008 - 19 posts - ‎16 authors
Have a 98- Eddie 4.0 SOHC, 4WD with a 100,000 mi. When driving it has a humming noise, it almost sounds like a bad tire, or a ... I start to hear the humming noise at 20 mph, it is very loud at 40 to 50 mph ... 94 XLT-95 FX4. humming gets louder as speed increases
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Does it change with vehicle speed or engine rpm?

vehicle speed: check wheel bearings lift vehicle and support it with jack stands grab the wheel at the 12 and 6 o'clock positions( to rule out steering linkage play) and wiggle in and out. A bad bearing that loud will have some play.

It sounds like you may have a wheel bearing/ hub assembly starting to go bad...You can check this by jacking up the front end and checking for slight play in each wheel when you try to move tire in a side to side,and up and down motion basically But you just want to use a wiggle motion...you should be able to feel a bit of excessive play in the side which is going bad...One side will be tight with no play,and the other will have some play if the wheel bearing hub assembly is going bad...

Try jacking the vehicle up and testing. If noise still present then possible wheel bearing failure.

Wheel bearing on the right front

You need to check the cv joints in the front end or the u joints in the front drive shaft.If none of the above then the problem is internal in the front diff.

jack up the front end and grab the tires at the 12 and 6 o'clock positions and shake them. if there is any play your wheel bearings are bad.

humming noise usually comes from wheel bearings. did you change that with a new bearing? also choppy or worn tires can cause humming noise that sounds like bad wheel bearings. rotate your tires and see if the noise changes. if so its tires. also even if it sounds like its from the right it could very well be a bad bearing in another location.

COULD BE THE WHEEL BEARING WORN. JACK THE WHEEL UP AND MOVE FROM SIDE TO SIDE LOOKING FOR EXCESSIVE PLAY AND SPIN THE WHEEL CHECKING FOR ROUGHNESS OR TIGHTNESS IF YOU HAVE THIS ITS THE WHEEL BEARING.....IF IT IS MORE LIKE A CLICKING OR KNOCKING NOISE WHEN DRIVING IT WILL BE A CV JOINT.TO TEST, DRIVE AT SLOW SPEED ON FULL LOCK AND YOU WILL HEAR IT.....IF THE SOUND IS COMING FROM THE ENGINE IT WILL BE ONE OF THE PULLEYS,(TENSIONER OR WATER PUMP) BUT IF IT IS THAT, YOU SHOULD STILL HEAR THE NOISE WHEN YOUR STOPPED (REV THE ENGINE A LITTLE) AND IF THERE IS NO NOISE ITS NOT COMING FROM YOUR ENGINE THEN......HOPE I WAS OF SOME HELP TO YOU..HAVE A NICE DAY.!!!!

It could be many things. Poorly balanced tire comes to mind first. If it was static balanced and not high speed balanced that is