Nasty sound and light vibration

[JExpedition07]

Slowing down from about 20 down to 5 MPH I have a nasty sound and the truck sounds like it’s falling apart underneath. It does not happen when going faster or when slower than these speeds. Only happens slowing between these speeds. Checked the rotors and pads tonight everything looks fine.

 

[Boostedbus]

Could it be in exhaust? Broken up converter guts? Or is it only while truck is moving?

 

[JExpedition07]

Could it be in exhaust? Broken up converter guts? Or is it only while truck is moving?

Only when moving. It’s weird I can’t seem to narrow it down.

 

[Boostedbus]

Maybe check transmission mount and motor mounts...I had a weird vibration/noise under certain conditions with my old f 150 and it was a broken trans mount.

 

[JExpedition07]

Extensive checking of everything has turned up nothing. Thinking about ordering new struts, coils, control arms, ball joints, bushings and just redoing the whole front end.

 

[JExpedition07]

Well I found it....not in the front end at all. Back brakes are cooked and metal on metal. No squealing, no sounds at high speed. But there is no pad left and it’s just the metal backer riding the rotor. Rotor is totally glazed and grooved. Guess they don’t do the squealers anymore.

 

[tommyddsr]

Every set of brakes I've ever bought including for the Expy's have the squealer tabs. Problem is the Expy's are so well sound isolated you can't hear them when you are in the car. Especially the back ones. State inspection should have caught them though if they were that bad.