Hiss sound

[jackcramerr]

I can hear hiss sound. It is much more audible when cold. Reduces when car warms up.

Sounds like belt. Is this common for a belt or could there be something else?

I will post a video if I can capute the sound on video.

 

Thanks.

[Lexus-IS]

How many miles you done on the current drive belt? Mine had annoying chirping noise on Cold starts which I haven't heard for a few years since I replaced the drive belt. Very cheap and simple DIY

[jackcramerr]

60k miles. Do I only change the belt or anything else like idler as well? Or anything else need doing while I am at it? Thanks.

[jackcramerr]

Drive belt part is 99367K1550

[johnatg]

You only need the belt. Get one made by Gates - eg there's one on eBay for £13.90. Dead easy to fit - just turn the tensioner with a socket, insert an allen key to lock it, slip off the old belt, on with the new, use the socket to release tension on the tensioner, remove allen key, release tension. Check that the belt is running true - not overlapping an edge of a pulley.

Make a note or take a pic of the routing before you start!

I changed mine a couple of years ago as a precaution as it was 10 years old. No symptoms and the old belt looked to be in good nick. Your problem may be something else. Or not.