I tried to capture a video of this strange noise that is driving me up the wall. I just bought this 2021 F150 FX4 XLT 3.5 eco boost. I test drove it but didn’t noticed the noise. Any ideas?

https://m.youtube.com/shorts/iNDLO0BRjkI

 

Hi there! Will you send us a message with your VIN and your local Ford dealer? I can look into things on my end.

 

Please email me directly Ian.1024@hotmail.com

 

please message me or email me at Ian.1024@hotmail.com

 

Welcome!
That Ford member will tell you to take it to a dealer as the first step. If you don't get satisfactory service from your dealer, then I would send the message with your VIN. I think you need 5 posts on here before you can send a message. Can you give some more details on when you're hearing that sound? Does it happen every time, at every stop? Only when cold, or only warm, etc? How many miles on the truck? Does it have a lift or level?
Details will make it more likely for other members to chime in with ideas and suggestions. First place I would inspect is the rear suspension to see if everything is tight because it sounds like it could be an under-torqued spring or shock bolt.

 

it does it around 90% of the time.
it can be cold, warm, or hot
57,000 miles
no lift or level yet

 

Have you found the resolution to your problem? Did you ultimately find out the issue, and the solution?

 

Not OP, but my truck was making chirps from the rear on acceleration from a stop, and it was due to the slip-yoke needing to be greased. Some what of a common problem from what I've seen. I also have a 21 and mine also needed it done about the same time that this guy posted. Not sure if it's just something we can expect to have to do every 3-4 years or what. It also cleaned up some rear-end vibration when they did it.

 

Thanks. We'll see what else pops up here. Sounds like they should have put a Zerk there.

 

Thank I didn't want to go to Ford for a fishing expedition.