Squeaking/Squealing sound

[Lucy06]

Lately I have been hearing this noise that sounds like a squeaking mattress (er er er er er). So far I have only been able to determine that it starts after long run times after I get off the freeway. I hear it most as I am coasting to a stop but I can't tell if that is just because the motor drowns it out under acceleration. Any Ideas?

[nylyon]

Does the squeak sound like it's coming from the back of the truck? My carrier bearing makes that squeak occasionally, I hit it with some spray lube and it's quiet for a couple more months. I know, I really should replace it.

[Lucy06]

It sounds more like it is coming from under hood. Where or what is the carrier bearing?

[nylyon]

Not the same as mine bed squeak. The carrier bearing is on the rear driveshaft.

[Lucy06]

Well thanks for the input anyway, I may just have a look at that too. You never know when you might luck out with something easy

[DIVITA21]

Check your u-joint in the rear. My truck was making these noices and that's what it was. Good Luck!

[Davey~do]

NM. Reading comprehension FTW...

[Lucy06]

So I still haven't been able to pippoint the squeak. But now it seems that I need to run her on the freeway for a while. After I get off the freeway it seems that the truck will squeak the worst around 30 - 40 mph wile coasting or breaking. Then the sound dies out below 30.

It's driving me nuts and ford can't seem to troubleshoot it either.

[bronco-dom]

lucy06 hoping to see if you found the source of the sound, my 2003 crew cab fx4 started it a year ago and after going through everything in the front end it still has the sound I have put the truck on a large post lift and wont make the sound off the ground same issues with it being the worst at 30-40mph, thanks for any help