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Old 02-06-2013, 09:59 AM   #14
Focus Jr. Enthusiast
Join Date: Feb 2012
Fan#: 95702
Location: West Des Moines, IA
What I Drive: 2002 SVTF ZX3 Ebony Black #0849

Posts: 25
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I replaced the passenger cv shaft in my 2002svtf last year. I had a squeal/chirp off and on and the outer boot was worn badly. In addition I had replaced the bearing, brake pads, rotor, strut, around the same time. Still didn't solve my occasional noise problem. Like the OP the sound would increase under corner and acceleration load. After a lot of trial and error later I found the problem to be the heater/AC cabin blower motor/fan. A worn bearing turned out to be the culprit, making a squealy chirpy noise when slight pressure was applied under load. I swapped it out for a new one from RockAuto for $55. Might not be your problem but just a thought as it is difficult to detect the difference from sound coming from there or the passenger wheel well when it the car needs to be in motion and under load to hear it. Good luck.
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