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Old Nov 21, 2008 | 08:44 PM
  #1  
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Drone type noise

I have an 01 F250 with 120k miles. I have always had a loud drone whiny type noise that starts at about 30 mph to 40 mph and goes away above that. I thought it might be the tires, but after replacing with new tires it was still there.

It only happens when I am pushing on the gas. when I let off and coast it gooes away. Also, I have put it in neutral while it was making the noise and stepped on the gas and it wasn't there.

It has always done it and doesn't seem to be grinding or causing any problems, jsut annoying noise.

Anyonw have any suggestions
 
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Old Nov 22, 2008 | 09:27 AM
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Originally Posted by bookum1
I have an 01 F250 with 120k miles. I have always had a loud drone whiny type noise that starts at about 30 mph to 40 mph and goes away above that. I thought it might be the tires, but after replacing with new tires it was still there.

It only happens when I am pushing on the gas. when I let off and coast it gooes away. Also, I have put it in neutral while it was making the noise and stepped on the gas and it wasn't there.

It has always done it and doesn't seem to be grinding or causing any problems, jsut annoying noise.

Anyonw have any suggestions
If you have a early build date 01 truck it probably has the rams horn y pipe that came on the 99, 00 and early 01 trucks. I had the y pipe changed on my DRW truck because of the severe flutter and all the noise went away but the 00 work truck I had had the old style pipe and it had the noise you described until I sold it.

Denny
 
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Old Nov 22, 2008 | 11:11 AM
  #3  
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carrier bearing noise ???

assuming ur truck has a two-peice rear drive shaft...
 
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Old Nov 22, 2008 | 07:30 PM
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not sure about the two piece shaft. How do I know if it is the carrier bearing
 
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Old Nov 23, 2008 | 10:16 AM
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Originally Posted by bookum1
not sure about the two piece shaft. How do I know if it is the carrier bearing
What I have done before is support the dive shaft and disconnect the bearing so you can spin it by hand to see if free or dry and check end play end play. I have never done it on a SD but its worked on other Ford trucks. You will also have to lower the shaft so the bracket will clear when turning the bearing around the shaft.

Denny
 
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