That is exactly the same sound as I'm experiencing, although mine only makes the chirping noise when turning right: http://www.cliosport.net/forum/showthread.php?710829-Chirping-noise-amp-brake-light-issue!
Let me know if you find the source..!
Is it only on acceleration?
ive got a feeling its the aux belt slipping as the tensioner maybe startng to fail.
But why would I be able to hear that same noise only when turning right?!
In my car:
No noise when stationary, even when turning steering wheel
Noise when just off centre (turning right) get's slightly louder and more frequent when off centre, but no worse nearer steering lock
Chirping is not affected by speed, revs, etc...
Is it possible to check the aux belt / tensioner? Or is it just a question of replacement parts?
ECU bracket, check to see if it's snapped near the turret.
Don't mean to be rude but the problem has been there for some time now. Would it not be easier to just take it to a garage/specialist to get it looked at??
As its only going to be guess work over the net.