2002 Ford Explorer need help

Tiny
PAT148SAN
  • MEMBER
  • 2002 FORD EXPLORER
  • 6 CYL
  • AWD
  • AUTOMATIC
  • 95,000 MILES
I have 2002 ford explore all wheel drive 4.0 engine. I had no noise until I put on new yokohoma tires. The noise sounds like hum when driving straight. It is worse when I make a( right )turn when the load shifts to left side Had wheels aligned. N balanced. No noise from any bearing when put truck on lift an run wheels. I put 7 thousand miles on tk. An rotate tires. Noise still there. I put on a new set of DUNLOPE tires noise still there. Since the noise was the loudest on right turn when weight shifts to left I decided to change the left front hub an bearing. The noise still there. The axels look in good shape no torn boots an no noise coming from them. I am a mech. Had other mech. Look at it an came up with no answers. NOISE ONLY WHEN DRIVING STRAIGHT AN ON RIGHT TURN. THE LOUDEST ON RIGHT TURN.
Saturday, September 25th, 2010 AT 11:02 AM

6 Replies

Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
Have you considered the left rear bearing?
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Saturday, September 25th, 2010 AT 11:24 AM
Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS
I agree with wrencttech, these trucks do have more trouble with rear bearings.
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Saturday, September 25th, 2010 AT 7:34 PM
Tiny
PAT148SAN
  • MEMBER
  • 8 POSTS
The only reason I am not looking at any other bearing its because I feel it right up threw the steering column to the steering wheel
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Sunday, September 26th, 2010 AT 10:32 AM
Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS
What did you torque the new bearing axle nut to? Should be in the 200 ft lbs range. If not done, your new bearing could be loose.
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Sunday, September 26th, 2010 AT 12:45 PM
Tiny
PAT148SAN
  • MEMBER
  • 8 POSTS
Well to be honest I didn't torque it ran it up with air gun. I don't think it is torque related. The noise is exactly the same NO change at all with the new hub n bearing. Checked all bearing with ear phone on lift. I must have changed at lease 75 ford wheel hub n bearing with no problem this is a tricky problem the noise is defiantly coming from left front like I said it traveling right up the steering column
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Sunday, September 26th, 2010 AT 6:35 PM
Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS
Well you wont get 200 ft lbs on a gun and you should NEVER use an impact on this nut. Damage to new bearing can occur with the hammering action of an air impact. I am sending you a tech bulletin about the known rear bearing problem. Use a stethoscope on you PS Rack to see if anything is going on in that.
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Monday, September 27th, 2010 AT 8:35 AM

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