Unmasking Idler Pulley Noise A Practical Guide to Diagnosis and Repair

With engine running using a spray bottle of water, spray some on belt. If noise temporary goes away, then you have a misaligned pulley, probably ... I am also experiencing an intermittent rumbling noise at highway speed. There is no vibration in the steering wheel, just a low droning noise. I'm still waiting on the part to arrive, so we'll see if that actually eliminates the noise, but I hadn't seen any other posts about this ... My truck started making a squealing noise when running. After some investigation, I discovered it was the idler pulley. If idler pulley is bad, oil may be splayed out (but that gets washed off by rain sometimes). For example, Bad alternator bearing indicated by ... usually it will either be a sound either buzzing or a sqeaking. mine would sqeak until it got hot then it just made a low metallic wearing noise ... 190 Likes, TikTok video from Tamayo_Tech (@tamayo_tech): “Idler pulley noise ! #mechanic #mobilemechanic #snapon #automotive #dieselmechanic ... Right! Especially the alternator pulley. Often the alternator pulley goes, which trashes the tensioner. Would be good to replace the idler ... I loosened it a bit.... same thing. After looking/listening, it sounds like it is coming from the idler pulley. I loosened the belt all the way, ... Comments13 · How to test which pulley is making noise on a vehicle squealing whining loud · NEVER Use WD40 On Your Pulley.... · How to Fix a ...