Clicking when A/C is ON from passenger side
 

Today, I was idling in the underground garage and had the A/C on while I took a look and I heard an off-best ticking noise from the passenger side of the engine, I suppose the valve cover but more on the chain side only. I was concerned, but I tried it with the A/C off and it went away.

My car just rolled over 100,000km...is this the dreaded VVT failure?

a/c clutch going bad maybe? ... it is constantly spinning with the crank and a/c clutch engages to run the compressor. Or maybe just worn bearings.

VVT will have major rattle at startup, goes away. Timing chain loose, rubbing valve cover is another. Can you post a video?

My car does this also, sounds like a bearing clicking around in there, but mine is only noticable really on low power setting, not so much at full blast and when a/c is off it goes away.

Its the tensioner plate. My car has this even after dealer replacement.

Here is a youtube of mine when it first happen before dealer replacement.

Yup, that is exactly what mine does. If you don't mind me asking what was the cost to fix that.

it was under warranty.

Whats funny is I change the drive belt today and the sound went away. I had to change the drive belt because a small pebble got in there and chewed up on of the ribs, so I changed it before it gave me any type of issues.

Has anyone fixed this problem on their own? Did you need to just replace the tensioner plate or is there more?

I am having the same problem, my car has about 62k miles on it and I took a vid from the engine bay and fp wheel

yfrog Video : http://yfrog.com/msz3nz - Uploaded by zelliott15
yfrog Video : http://yfrog.com/n257601056z - Uploaded by zelliott15

It's been two weeks since I changed the drive belt and it seems to have completely nullify the sound. Haven't heard it since.