Six weeks ago I heard a loud "chirping" sound under my Xsara's bonnet on start up. "Ooh, wow - this has to be a failing auxiliary pulley bearing", I thought, as I so carefully listened intently to each of the 5 possible culprits around which the serpentine belt runs. Surprise! Not a single pulley gave away the game, forcing me to glibly (i) replace the belt and (ii) dump and refill my steering box with new fluid, thinking that I've found the solution. Not a chance....the chirp, chirp has now dogged me for six weeks and I'm losing my cool with the fact that I cannot isolate where the chirping is coming from. There are no filings around any of the pulleys, no smoke billowing from over heating bearings; 'anti squeal' belt spray does nothing to relieve the chirping and to add insult to injury .... I about to nervously embark on a 600km trip in 10 days time. Another clue: when I turn the steering rack left or right - whether stationery or on the move - the chirping sound increases in volume - how embarrassing in public parking lots! Chaps, I've hit a brick wall as to my next move. HELP...please!