my blower fan i believe is making alot of noise on the high setting of 4..
heat or a/c.....it doesnt make any noise at any other speed but sometimes when on 3 and you start the truck it will make noise just for a second....i am thinking the fan probably needs replacing as ford puts these cheap *** plastic bushings on the fans..does anyone have any input on this???? does the dash have to come off to access where the fan is???? does anyone have a diagram of the whole system under the dash???? 2004 f-150 stx 2wd....any info would be greatly appreciated