Out of the blue I got the "pulley squeal" from the front of the engine in my '03 V6. I just got done swapping out all 4 pulleys with brand new Gates brand pulleys. Still have the squeal and it is annoying. Belt has maybe 4,000 miles on it. Any other ideas what it is?...a/c compressor or water pump? Could my belt squeal already after 4,000 miles?