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Old 09-13-2010, 06:57 PM
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cricket or wind-like sound when moving

Hi folks. Lately, when driving over 20mph/30kmh, my 2003 F350 6.0L Super Duty has been making what I can only describe as a cricket-like or windblowing-like sound that wavers up and down. However, it doesn't matter what speed I go, the sound does not increase in tempo nor pitch. It stays the same. It happens only when the truck is moving. It is not anything to do with the motor as I've revved up the motor gradually in neutral and no sound. I've even put the truck in neutral when coasting downhill, and it makes this weird whee-whee-whee sound....again never changing tempo or pitch with changing speed. What the heck can be causing this? Any ideas? Thanks.
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Old 09-27-2010, 08:54 PM
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Smile

found the problem. The bearing at midship linking the two drive shafts was going. Replaced it, and the noise is gone. Funny though that the noise did NOT change pitch nor speed when the vehicle travelled at different speeds. One would expect that it would.
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Old 09-27-2010, 09:12 PM
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Originally Posted by northernpointer View Post
it makes this weird whee-whee-whee sound....again never changing tempo or pitch with changing speed. What the heck can be causing this? Any ideas? Thanks.
Glad you found the problem. Did it sound like this? JK!
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Old 09-28-2010, 07:34 AM
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Originally Posted by northernpointer View Post
found the problem. The bearing at midship linking the two drive shafts was going. Replaced it, and the noise is gone. Funny though that the noise did NOT change pitch nor speed when the vehicle travelled at different speeds. One would expect that it would.
I think that I have the exact issue. It's a rhythmic high / low sort of like old bed springs sound. I have shot oil on the center bearing and the noise stops. How much effort was it to replace that carrier bearing?
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Old 09-28-2010, 06:53 PM
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I have private extended warrantee on my truck so my cost was the deductible of $50. However, from overhearing my mechanic, I think it came to about $250 or so Canadian.
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Old 10-18-2010, 09:31 PM
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Mechanic had it done in about half an hour. I wouldn't know how to remove it, nor do I have the tools to do it. He did say it came off pretty easy, that sometimes they can be tough to take out because the bolts are tight/rusty.
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