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I just developed a slight howl in the front of my engine whichis a 5.4 in an 03 f250. All stock. Sounds like maybe a pully/bearing.. An suggestions would greatly help in diagnosing this asap.thanx
Have you checked the fan clutch? If the fan is locked, it will be spinning at all times and possibly sound different than you're used to. Maybe it's the PS pump, it could be time to flush the PS fluid or replace the pump.
Checking the fan clutch and flushing the PS fluid are pretty cheap. Plus it doesn't hurt to do this from time to time.