still squeaking

[cj_92Bronco]

hey yall im sure this is getting annoying, but my truck is still squeaking a shit load. It sounded like it was the tensioner pulley, so i replaced it, and nothing happened. I took a cardboard tube to try to isolate the sound, but the best I could narrow it down to was still the tensioner pulley, maaaybe the fan but i really don't think so, it just sounds like its coming from the center of the entire assembly. Does anyone know what else is a common "squeaker maker" after a '92 bronco has been driven for 160,000 miles on it. I also replaced an old belt that had been so worn it was like 3 inches longer than the new one, so im thinking maybe the faster rotation of the pulleys because of the tighter belt did something. Ive also tried tightening and loosening the tensioner, and it doesnt squeak when I start it up but after a minute or so of idling it slowly starts squeaking until it gets really loud.

 

[BroncoJoe19]

When you fix the obvious and that doesn't take care of the problem, then you have to start looking at the less than obvious.

I think a water pump will leak before it squeeks, take a close look and see if it is leaking at all.

Have you already pulled the belt off, and tried spinning all of the parts that are driven by the belt, and felt if they spin freely, or maybe are a little gritty?

Do you have air conditioning... I imagine that the compressor clutch can squeek, but don't know how to check it. Maybe if you turn it on to engage it.

Here is the crazy one... are all of your parts in proper alignment? I recall once that I had a car that needed a spacer behind or infront of the alternater bracket so that it would align properly. If one of your components is a little twisted, then it would torque the belt a little and may cause a squeek.

Does your truck have only one belt? or two or three?

IF it has more than one, you can eliminate one or two at a time to narrow it down.

Good luck... this stuff can drive you nuts.