Weird noise

Derrick Rucker

Original poster
Member
Apr 23, 2016
145
Tennessee
Hey guys so 2 days ago my Trailblazer started making a weird noise it almost sounds like my rotor is rubbing on something would be the best way to describe it but it's coming from the engine and when I pop the hood it's coming right from the power steering pulley but I don't have any check engine lights or any trouble with anything just this awful noise anyone experience this or had this trouble?
 

AtlWrk

Member
Dec 6, 2011
674
Very common problem: tensioner pulley bearing.

Take the belt off and spin the pulley by hand. It should rotate smoothly and freely. Any grittiness or draggy feeling indicates the bearing is shot. Fortunately replacements are easy to come by and it's literally a single bolt to swap it out. Might as well check the idler pulley too while you're at it (under the alternator).
 

Derrick Rucker

Original poster
Member
Apr 23, 2016
145
Tennessee
Very common problem: tensioner pulley bearing.

Take the belt off and spin the pulley by hand. It should rotate smoothly and freely. Any grittiness or draggy feeling indicates the bearing is shot. Fortunately replacements are easy to come by and it's literally a single bolt to swap it out. Might as well check the idler pulley too while you're at it (under the alternator).
Should I turn it the way it's supposed to go to test it or the opposite way
 

Sparky

Member
Dec 4, 2011
12,927
Doesn't matter.
 

Mooseman

Moderator
Dec 4, 2011
25,262
Ottawa, ON
Spin each idler in both directions and listen for any kind of noise or feel roughness. If in doubt, replace it.
 

Wooluf1952

Member
Nov 20, 2011
2,663
Milwaukee, Wisconsin
IIRC, it's easiest to just change the assembly. I'm not sure if you can even buy just the bearing.
 

xavierny25

Member
Mar 16, 2014
6,323
Staten Island, N.Y
I'd inspect them all since your going to have the belt off. Definitely check the water pump pulley ,idler pulley,tension pulley and so on. The idler and tensioner are pretty easy and not expensive at all. Bolt off,put new in place,align,bolt on and tork.
 
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mrrsm

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