[Zak.Holley]

I've had this noise in idle for quite a long time now, not too sure what it is, any help?
https://vimeo.com/288061780

 

[KW2004Accord]

Hard to say but my guess would be the serpentine belt & / or tensioner, wonder what others think.

 

[greg1c]

Really hard to say, but a simple test would be to take the serpentine belt off and run the engine. If it stops then start investing everything in the path of the belt.

Sent from my Pixel 2 using Tapatalk

 

[t-rd]

Most likely shot bearing in the idler or tensioner, but you need to take the belt off first like others said, to identify the right component.

 

[visionguru]

Easiest diagnosis first: spray some water on the belt to see if there is a change. Most likely: you need a new drive belt.

When my mechanic replaced the timing belt, he might have installed the old drive belt in a different direction, which caused very loud chirping noise. A new belt solved that.

 

[2Accordz]

It does sounds like the tensioner pulley, but just like others said, you'd have to isolate the noise with a mechanic's stethoscope.

I ended up replacing mine, and as it turns out, it was the PS pump(the tensioner was $20. and the car had 170K miles on it, so I figured why not.)