sounds like a bearing going out

[abyss57103]

I have a 1999 Bonneville with 216,000 + the problem that i'm having is it sounds like i have a bearing going out around the area of the alternator cant quite pin point it down as to where is is actually coming from...now when i remove my oil cap the noise goes away and purrs like a kitten. Has anyone else ever have this problem and found out the cause. Thanks

 

[melsg5]

you can try a rubber hose, one end against your ear the other end move around to pinpoint noise source. When is the last time you changed the PCV valve?

 

[abyss57103]

not sure when it was changed i just got the car and i did pull it and it looked new but i cleaned it out with some cleaner and i drove it around a little yesterday and it purr like a kitten,so we'll see