Wierd noise under cab

[giox]

I recently started to get a wierd like slapping noise under the cab when the truck starts to go only when i floor it.. Or when i have extra weight in the bed .. I change out the bearing that in between the axel thinking it was that but kinda lost of ehat it could be... Everthing the same the only thing i change was the tranny but that was from another xrunner . ? Im super lost please help

 

[giox]

Sounds like its coming from the axels

 

[Coupe]

Have you checked your u-joints?

 

[STONER-X]

U joint........

 

[giox]

Yeah well i put one of them in new maybe i should do the others?

 

[fishsticks]

Check all three. If they do this then replace them. They are ridiculously easy to replace on these trucks, really no reason to not do all at once.

https://www.youtube.com/watch?v=-MXLjaaKS0Y

 

[giox]

I disnt think o at the time

 

[Coupe]

If you use the 4 x 4 u joints, there are zerk fittings so they can be greased in the future.

 

[giox]

Now i gotta do the others over the weekend

 

[giox]

Ok so indid the others and the front one was bad the rear one not so bad still life but change all of them and still does it.. ? Can it be becuase of the axel not being balanced?

 

[NHXRUNNER]

Carrier Bearing?

 

[giox]

I did that as well

 

[giox]

What could it be?

 

[NHXRUNNER]

Can you take a video and post it on youtube?

 

[giox]

Mmmm dont have a youtube account it only does it when i high rpm it like slaps kinda like vibrating i was told maybe the nuts or acrews broken?

 

[NHXRUNNER]

There's no way for anyone to internet diagnose a noise without hearing it. It's hard enough to do it with a video.

 

[BSP06XRU]

How about the exhaust heat shields under the truck? They could be slightly bent and rubs when the system vibrates under load.

 

[Phracker]

Maybe a bolt is not completely seated on the crossmember or transmission mount. Do you get just noise or a ton of vibration as well?

 

[Coupe]

I would also check the heat shields that are bolted to the bottom of the cab.

 

[revobreaker]

Carrier Bearing?

When I did my trans I had a weird noise only under hard acceleration. Turns out the carrier bearing mounting bracket is slightly off center so It had to be flipped around and the noise stopped.