Idler Pullley Noisey

[crusher]

Hi guys, I changed out my idler pulley last week on my 1997 Jimmy because it was chirping ..Driving me nuts. After I replaced it about a week later it starting chirping again so I gave it a couple of shots of lube on the back side of the pulley and bingo the noise would dissappear. I am noticing when it rains then the next day when I start the truck up it would chirp then driving for a bit the noise will completely dissappear. intermitten...Only chirps the next day after a rainfall. when the weather is warm no noise

I am thinking moisture has something to due with it??...Any help would be appreciated

Driving me crazy

 

[1988IndySierra]

My idler pulley chirped as well after replacement. It actually turned out to be the belt. As the engine was running, I held a bar of soap along one side and then the other until the belt was well covered and the chirping stopped. Be careful though, don't get caught up in the fan!

 

[crusher]

Ahh interesting..thanks....

I did notice that my belt has bit of glazing on it.....So maybe the belt should be replaced?