Video: terrible popping sound in 4wd

https://youtu.be/FvnFsFMAhuM


Tried uploading vid before , couldn’t do it so I uploaded to YouTube. Notice the noise under heavy 4wd load and or flexing. Without jacking the truck up I visually inspected everything front and rear suspension wise , didn’t notice anything unusual. Shook both driveshafts, they’re tight. Really need to figure out what’s causing this. Video demonstrates noise perfectly. Any tips or suggestions would be greatly appreciated


EDIT- truck doesn’t have to be in 4wd to make the sound. Just needs to be flexing.

 

Let me know if the video is working or not

 

Sound works. Video works. Do you feel any resistance to movement when the sound happens?

 

Dealer trip …

 

Assuming that you have cast wheels, have you carefully inspected them for cracks in the 'spokes?'

 

Steel wheels, haven’t checked but I will

 

Dealer won’t do anything for me, ive tried on other things. Absolutely no way to even come close to replicating this sound unless we have the proper terrain. Won’t happen in a parking lot

 

If your pinion gear had a missing tooth, or your T-case had an issue, you should feel a shudder that matches the timing of the noise. If the truck is still making smooth progress when the noise happens, it would be something suspension related I would guess.

 

Smooth operation in 2wd and 4wd. Only does it when flexing or under heavy 4wd load

 

Do you have any skid plates or hardware down there that could be moving around or loose? Recently installed ?

 

Factory front Trd skid plate, recently installed sliders

 

If it makes a difference, the truck still makes the sound in 2wd

 

Perhaps something loose in the front suspension?

 

Try the same terrain without the sliders.

 

I just crawled underneath. I checked everything. Nothing usual. Checked both driveshafts as well

 

Truck isn’t lifted, but do u guys think the needle bearing could be bad? Drivers side cv has some play where it meets the diff

 

Video fully works. Seems its more in the suspension binding then popping loose than a driveline issue.

 

I added a semi hidden winch bumper and winch. Total was like 150 pounds. Threw on 1/4 inch headstrong coil spacers to bring it back to factory height. Im wondering if that’s to much load/weight for the coils.

I also disconnected the sway bar end links to try and rule out the sway bar. Didn’t make a difference

 

Did it happen before the sliders? Which brand sliders, bolt on or welded?

 

Rci bolt on. If I recall correctly, I do believe I heard the noise once before the sliders while on the trail. But only once. That was 4-5 months ago. Now the noise comes in all the time at hard flexes.