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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.
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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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