Well, I'm back to driving my old 3.0 Ranger again, just for a work vehicle. I have a part time job for the time being, I work 4am to 8am. Like clockwork for the last week, I'll start the truck and itll start squealing like crazy, the whole way to my job which is 4 miles away. When I get in my truck at 8 to leave, its quiet, along with any other time of the day. Only does it first start of the morning. I did put a new belt (Master Pro not Gates, probably a bad choice right there), a new idler pulley, and I'm almost certain a new tensioner with pulley, around 15k miles ago. I'd like to pinpoint what it could be before I throw any money at it. Opinions please, Im thinking tensioner or belt.