When I turn on my heater, (blower motor) defrost,or any part of the "climate control" I get a clicking sound.The higher the setting the faster the clicking. I replaced the blower motor about a year ago.It had a quieter click when first installed,but now it's just getting annoying. I don't remember the old motor making any type of noises,could I have over tightened the blower fan? Any suggestions on what could be causing this noise?