Squeaky Bearing on Pulley

[ThirdCoastStroker]

I have a pretty nasty squeak under the hood sounds like it is right up front you can hear it best when you put your ear in front of the radiator. It really sounds like a bearing going out on a pully. Does anyone have a diagram of what pullys run what? Also anyone have any clue as to which one is the most prone to failure? I really need to get it fixed before it locks up, throws a belt, and leaves me stranded. Any input would be great.
thanks

[diesel23]

Really sounds like the belt tensioner pulley , mine started squeking alittle then gradually got worse , till it just squeked like hell , and had to have it replaced ,

[ThirdCoastStroker]

It is a weird squeak slash almost a rattle kind of I need a diagram of what is what so I can try to narrow down which pulley it is

[Evil PSD]

Def agree with diesel23, my tensioner went out at 29k had it replace under warranty.

[mxpowerstroke457]

Yep sounds like the tensioner, mine went out as well, actually cracked and ripped the belt. My didnt really squeak, it just rattled ridiculously.

If it doesnt snow to hard tomorrow i will get a picture of where its located under my truck for you.

[travisH3]

the dealer just replaced mine under warranty. my buddy said his went and he didnt have any brakes while he was towing his equipment and claimed he had to stop with e brake. Can that happen? mine wasnt really bad yet but glad they took care of it. it would only squeak on cold starts for a few minutes.

[sinner6.0L]

I generally change atleast one belt tensioner a week. It's pretty easy to look up from below and see if the tensioner is bad if you know what to look for.

If you lose your power steering you will lose your assisted brakes. You'll still have a pedal but no assist, I can imagine that would be pretty scary towing a load.

[ThirdCoastStroker]

Yup, had it happen on my old 97 7.3 had to get towed because the pulley froze at about 1 am 50 miles from home, that sucked

[ThirdCoastStroker]

Well turns out it was the Tensioner pulley, dealership just called, they are going to charge me $500 to replace that SOB, gotta love the stealership, I dont think my extended warranty will cover that either.

[04hdfatboy]

So it was the belt tensioner and not the idler pulley?