I have an 08 Nissan Sentra SE-R. Took it to Valvoline a month ago for an oil change and got talked into having my serpentine belt replaced. I didn’t have any issues with my car until a few days ago, it’s making a squealing sound every once in awhile when I turn it on. Took it back to Valvoline assuming it’s an issue with the new belt and was told it was a pulley starting to “walk” and that I shouldn’t be driving my car too much until it’s fixed. I stopped by my regular (trusted) mechanic and both he and his partner took a look and said it’s absolutely not a pulley and he doesn’t know what they’re talking about because the belt and pulleys are running fine, he also said I shouldn’t have a problem driving it. He suggested I go back to Valvoline and have them maybe replace the belt.
I’ll be stopping by there again but does anyone have any ideas on what could cause the squealing? Everything was fine for a month so I don’t know why it would start acting up now.