I have a 1997 F350 and it squeals all the time or will chirp. I have replaced the water pump, alternator, serpentine belt a few months ago and most recently the power steering pump and pulley. It still squeals and its coming from the driver side of the engine, what else could it be or will it just always squeal, when I changed out the belt it stopped for two weeks but then started squealing again. Now that ive changed out the power steering pump and pulley its more of a chirp, what could it be ?????