Post by
Gilded_Splinters »
https://forums.nicoclub.com/gilded-splinters-u212938.html
Tue Jan 15, 2013 1:54 pm
It probably is your idler pulley, but here's how you can be sure:
First, identify the idler pulley. It might be shown in the belt routing diagram in the engine compartment.
Start the car cold and while it's whining, spray the bearing area of the pulley with silicone spray. Avoid spray oils as they will make belts slip. If it momentarily quiets down, that's it. If not, try a spritz on other rotating parts.