OK My 2010 4.0 developed what sounded like a bearing noise at idle after the truck warmed up by 1700 rpm it was gone.

Drove me nuts pulled the belt spun all the accessories & all sounded good

Well finally I broke down and took it to the dealer 15 min later I get a call
Dealer "we think we know the problem it is your oil filter"
Me " are you kidding me how can that be"
Dealer " we have seen it before some cheep filters will cause it. cant be sure but it is the first thing to check"
me "ok do it I need an oil chance anyway"

an hour later I get a call that its all fixed

I had my doubts but drove it 40 miles & it sound great

They told me some filters do not have a check valve & for some reason will cause the noise.

I never go to the stealership but it was such an odd noise that I figured I needed someone with pathfinder knowledge glad I did,

I asked what filter I had but they did not know (I had the oil change done at jack williams auto in Hamlin PA)

I get a bearing noise at startup, I thought it was the pully above my altinator I can hear it really well from the passenger side wheel well and when I pop the hood it's most defiantly coming from the front right side of the engine I haven't investigated to deeply yet it just started figured I would give it a chance

08PathPounder wrote:I get a bearing noise at startup, I thought it was the pully above my altinator I can hear it really well from the passenger side wheel well and when I pop the hood it's most defiantly coming from the front right side of the engine I haven't investigated to deeply yet it just started figured I would give it a chance

WOW, you used a comma! Why?

eieio wrote:

08PathPounder wrote:I get a bearing noise at startup, I thought it was the pully above my altinator I can hear it really well from the passenger side wheel well and when I pop the hood it's most defiantly coming from the front right side of the engine I haven't investigated to deeply yet it just started figured I would give it a chance

WOW, you used a comma! Why?

Lolol terrible grammar I know

08PathPounder wrote:I get a bearing noise at startup, I thought it was the pully above my altinator I can hear it really well from the passenger side wheel well and when I pop the hood it's most defiantly coming from the front right side of the engine I haven't investigated to deeply yet it just started figured I would give it a chance

Steering pump plus pulley is right above the alternator. Mine is bad, I'm replacing it this week...