squeaking idler pulleys

[black as]

Hey Guys
Found my idler pulleys are starting to squeak a lot until the car gets hot, its a 6 litre, has anyone had the same problem ?

 

[davway]

i have the same problem on my 5.7 litre.
its not the idle tensioner but one of the other two idler pullies.

 

[black as]

I thought it may be that, haven't pulled it apart yet to have a good look. Sprayed some CRC on it and it went away for about 10 minutes and its back again. Its annoying:bang:

 

[davway]

sounds like mine.
give it a spray and itll stop for a bit but it always comes back.
seems to almost stop when the car warms up as well.
im not sure if its a serviceable part or not or if its just one of those parts that your better off replacing and not worrying about it.

would like to hear other peoples thoughts though.

 

[naf33n]

sure its not the belt, my sv6 would squeak sometimes when cold, or if it was wet(had bonnet scoops) changed the belt and the problem never came back

same deal with a mates monaro, was making a similar noise to my sv6, changed the belt for him and problem solved

 

[VT-565]

Theoretically, if the pulley is plastic, it will be expanding faster than the captive bearing inside, this will increase the clearance between the ID of the pulley and the OD of the bearing. There may be some movement.
But i could be wrong too, whilst talking out of my arse.

 

[davway]

i know mine isnt the belt.
if i spray behind the pulley (or around the bolt) it shuts up for a bit.

 

[andyman]

replace the pulley thats squeaking, simple, if you spray lubricant on the pulley make sure its not getting on the belt aswell

 

[buzuki]

yeah i work on a few 6L and ive heard plenty squeaking, also heard the radiator fans sqeauk a bit too, usually most have had roughly ~100,000 klm

 

[davway]

any ideas on what a pulley costs?
a lot or a little?