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01-12-2013, 10:07 AM #1
Trying to locate bad bearing noise
01 Silverado w/ 5.3 ltr @ 100,043 miles
How can I do locate worn bearing noise in my P/S Pump, Belt Idler Pully or a Water Pump ?
I'm getting weird (whirrrrrrrrrrr) noise that sounds like metal grinding with the truck in park and the engine @ idle and sometimes when driving. Engine bay is super clean, fluids always topped off when checked hot & cold no signs of leaks in my driveway . The noise was very faint when 1st noticed about a week ago but now it's louder even when driving the truck but it's not continuous and come & goes. 1 thing I have noticed is
2-3 days a week normally @ startup in the morning the power steering is a little stiff when I pull out of my driveway making a right turn. This normally happens 1st thing in the morning and only last 5-10 seconds and don't return until maybe the next morning. Power Steering Fliuid is clean and topped off.
Any ideas or thoughts how to fix ?????[SIGPIC]
01-12-2013, 06:15 PM #2
The easiest way to to remove the drive belt(s) and turn the pulleys by hand, a bad bearing will be a little rough. A note of caution though, the alternator can feel like it's "rough" when it's fine, it's magnetic residue.
Usually, the idler gear is the one that fails first.Ray
'09 Avalanche LTZ - Black
'05 Envoy XL (sold)
01-13-2013, 08:57 AM #3
Thanks for responding Ray Voy.....I'll pull the belt and start checking things. I forgot to mention that the Serp. Belt has a brown powdery residue on it. Probably is the idler gear.[SIGPIC]
01-13-2013, 10:20 AM #4
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