What does a failing belt tensioner sound like?
When the tensioner or tensioner pulley fails, the loss of tension can cause the belt and pulleys to make high-pitched rattling or chirping noises. If the pulley bearing completely fails, it can also cause a squealing or even a grinding noise. Symptom 2: Knocking or slapping. This can cause a slapping or knocking noise.
What does an idler pulley sound like when it’s going out?
Squealing. When the engine is idling, a bad pulley may make a squealing sound. This is due to the bearings in the pulley going bad. The bearings may also make various other sounds such as clattering or even a rumbling sound, making the vehicle sound as if there was much more wrong than a bad pulley.
Can idler pulley making noise?
Reasons for Idler Pulley Noise The sound comes from the rubbing of the serpentine belt against the pulley surface. In extreme cases, when the engine is started, the pulse may slip out of its way, or it may become trapped and the belt produces a loud noise.
Why does the timing belt make a noise at idle?
Sounds to me like a combination of the timing belt flapping around and the bearings starting to go. 60,000 miles on Gates components is pretty good their bearings especially don’t hold up.
Why does my Toyota engine make noise at idle?
Thats the quickest way to find out if its inside or outside the timing covers. I thought Toyota’s recommended timing belt service interval was at 60K miles for our vehicles. If that’s the case, the OP/TS is all but due for this service which would most likely find and eliminate the the noise they are reporting.
How old is the timing belt pulley on a Toyota?
Water pump and timing belt pulleys have 57k miles on them. Timing belt 47k (5 year old Toyota belt). Did you try backing off the bolt for tensioning pulley, letting the spring retension the belt and then retighten the bolt?