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Card stuck in a bicycle spoke noise

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  #1  
Old 10-23-2021 | 05:10 AM
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Default Card stuck in a bicycle spoke noise

Hello everyone. My 04’ Disco II is making a flapping noise while accelerating to speeds above 10kmh. The closest thing I could compare the noise to is the noise produced by a playing card stuck in a bicycle spoke. The noise gets louder as I go faster. In addition to the flapping noise, I can feel the truck rumbling slightly.

A different noise is produced when coasting and not accelerating. The noise is a rapid click. My best guess is a drive train or transfer case issue, as the flapping/clicking is not heard while at a stop. I have some 75w-90 gear oil on order as the transfer case fluid is quite low, though I am not confident that topping off the oil will remove the noise. Any suggestions would be greatly appreciated!
 
  #2  
Old 10-23-2021 | 06:39 AM
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Check the front driveshaft
 
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  #3  
Old 10-23-2021 | 06:41 AM
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Originally Posted by zski128
Check the front driveshaft
The front drive shaft has new u-joints, installed two months ago. This problem began about a month after the u-joints were replaced.
 
  #4  
Old 10-23-2021 | 09:35 AM
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check that t-case fluid level - when one is about to let go they make a sort of "catching" sound and it will impede the movement of the landy off and on until it locks up
 
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Old 10-23-2021 | 01:40 PM
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Check the engine fan and that it's not basically doing exactly what you're describing.
 
  #6  
Old 10-23-2021 | 05:22 PM
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Originally Posted by Brandon318
Check the engine fan and that it's not basically doing exactly what you're describing.
Thank you for the suggestion. The noise is not present while at a stop. But I checked just to be sure there were no objects stuck in the fan.
 
  #7  
Old 10-23-2021 | 06:00 PM
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Was the center bearing replaced with the u joints? It can make the same noise. Pull shaft and spin/flex by hand on the DC side to see if you hear clicking.
 
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  #8  
Old 10-23-2021 | 06:13 PM
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Originally Posted by PickleRick
Was the center bearing replaced with the u joints? It can make the same noise. Pull shaft and spin/flex by hand on the DC side to see if you hear clicking.
No, the center bearing was not replaced.

Should the front driveshaft have a little left/right play when hand-rotating the shaft with the wheels on the ground?
 
  #9  
Old 10-23-2021 | 06:27 PM
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The spring loaded center bearing takes out the slop between the joints. I just went through this on a 99. Even on the rig I could make the shaft with new joints move.
edit: you'll have some spin slop due to some designed drive line play but you should have zero play in drive shaft joints..
 

Last edited by PickleRick; 10-23-2021 at 06:50 PM.
  #10  
Old 11-02-2021 | 09:03 PM
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I replaced the drive shaft with a pre-built hardened drive shaft and the noise is still there. Any suggestions? I’m stumped.
 


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