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  #11  
Old 11-18-2020, 01:38 PM
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I can't believe the shop would let that go with saying "it didn't make the noise on the lift!" Maybe time to look for different shop!
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  #12  
Old 11-18-2020, 01:51 PM
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Originally Posted by 80stech View Post
I can't believe the shop would let that go with saying "it didn't make the noise on the lift!" Maybe time to look for different shop!

Had him take a look at it during my lunch break the other day, he didn't have time to really dive into it.

Just brought it back and he let me sit in the car with it on the lift in gear. We jacked up the front suspension to put some load on it and it didn't make any noise, even when I brought it up to 2K RPM. He put a stethoscope on the transfer case and other suspected parts. No dice. As soon as if we got it off the lift and drove it, I was able to recreate the noise.

He thinks it might be a wheel bearing, but he isn't sure.
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  #13  
Old 11-18-2020, 03:17 PM
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Really doesn’t sound wheel bearing like and it also doesn’t look like the sound is a one to one rotation with the wheel... it sounds faster based on the video. The fact that it only happens with the weight of the truck on it should tell us something too. You may have to drive that side of the truck up on a ramp (so everything is more compressed) and slide under there and inspect the entire length of the rotating assembly - sounds very much like something is rubbing. As EODGuy said, almost sounds metallic, like sheet metal scraping.

Did your mechanic thoroughly inspect everything for scrape marks? I would think if it is external that something has to have a mark or ten on it.
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  #14  
Old 11-18-2020, 07:42 PM
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I had a similar sound and it was the driveshaft center bearing.

If you are reversing and you hear that sound that's kind of the giveaway of the shaft vs a wheel bearing.

Also if you think about the revolutions of the driveshaft vs the wheels, that's why it sounds "fast" when you're moving slowly.

In my case accelerating or loading the drivetrain made the noise go away for a while and then it changed to different howls and squeaks as I kept driving it
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  #15  
Old 11-18-2020, 09:28 PM
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Quote:
Originally Posted by Purplefade View Post
Really doesn’t sound wheel bearing like and it also doesn’t look like the sound is a one to one rotation with the wheel... it sounds faster based on the video. The fact that it only happens with the weight of the truck on it should tell us something too. You may have to drive that side of the truck up on a ramp (so everything is more compressed) and slide under there and inspect the entire length of the rotating assembly - sounds very much like something is rubbing. As EODGuy said, almost sounds metallic, like sheet metal scraping.

Did your mechanic thoroughly inspect everything for scrape marks? I would think if it is external that something has to have a mark or ten on it.

My indie and I had a good look at it today on the lift, and under in while on the pavement. Nothing had scrape marks, no fresh metal or clean shiny parts. No excessive play in the drive shaft, or any suspension components. I agree that it seems faster than the rotation of the wheel.

I setup a camera under the car to see if I could narrow down where the sound is coming from while driving, but it's not making the noise at all right now. Think it's due to the cold weather, but I'd love if it didn't come back!
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  #16  
Old 11-18-2020, 09:42 PM
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Quote:
Originally Posted by c-bass View Post
I had a similar sound and it was the driveshaft center bearing.

If you are reversing and you hear that sound that's kind of the giveaway of the shaft vs a wheel bearing.

Also if you think about the revolutions of the driveshaft vs the wheels, that's why it sounds "fast" when you're moving slowly.

In my case accelerating or loading the drivetrain made the noise go away for a while and then it changed to different howls and squeaks as I kept driving it

I've only had the noise happen briefly one time while rolling backwards, as soon as I shift into reverse it goes away. Not ruling out the center bearing though, the rhythm that it makes definitely makes that suspect.
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  #17  
Old 11-18-2020, 11:32 PM
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Originally Posted by qlty View Post
I've only had the noise happen briefly one time while rolling backwards, as soon as I shift into reverse it goes away. Not ruling out the center bearing though, the rhythm that it makes definitely makes that suspect.
the sounds I was hearing were very random for a while, then I guess it got to the next level where it made more predictable sounds for some time, and then it entered a new phase which we'll call banshee howls.
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  #18  
Old 11-18-2020, 11:45 PM
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Originally Posted by c-bass View Post
the sounds I was hearing were very random for a while, then I guess it got to the next level where it made more predictable sounds for some time, and then it entered a new phase which we'll call banshee howls.

Thinking I might need it to get worse and more frequent before I can pin it down. The truck drives great right now, I've had all it's scheduled maintenance done over the past three years. Hurts to not have it running 100 percent perfect, but that's life!

Hopefully it'll either go away for a long time or become more obvious soon.
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  #19  
Old 11-19-2020, 12:57 AM
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To me that sounds like either brake pad shims, or the the caliper/rotor assembly. Might be the dust shield bent out of place as well. On previous vehicles, ive used thin cardboard around the edges of pads(backside) to silence them because the thin metal shims were bent or not uniform.

You said it all started after a caliper seizure, are there any bent or broken parts that you noticed? Outside of that, Im gonna put my money on the "anti-rattle clip" or "quiet-shim". IDK where you buy your car parts or how much you like to spend, but i see a high end euro kit, and top shelf weaver kit that includes the dreaded shims. If you have them on your pads, try to RTV them or insert a small pad (cardboard, gasket) between the shim and pad.

If one side is bent or not making contact properly, that would explain why its only in reverse. Good luck
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