# Intermittent noise on 2008 F150 **URL:** \ **Category:** Maintenance/Repairs\ **Created:** [June 1, 2012, 10:31am UTC](https://community.cartalk.com/t/intermittent-noise-on-2008-f150/72783 "2012-06-01T10:31:56Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![racingus](https://avatars.discourse-cdn.com/v4/letter/r/d26b3c/32.png) [@racingus](https://community.cartalk.com/u/racingus)\ **Post date:** [June 1, 2012, 10:31am UTC](https://community.cartalk.com/t/intermittent-noise-on-2008-f150/72783/1 "2012-06-01T10:31:56Z")
2008 F150 4x4 27000 mi There is an intermittent metallic /rattle sound (like marbles or a chain in a can) seems to be coming from front passenger side;sometimes on first acceleration , sometimes after turning a corner, sometimes after hitting a bump. Doesn’t last more than a few seconds Had my mechanic friend look at it on hoist and no apparent loose parts in exhaust system or breaks; 1st noticed it last August ( 7000 miles ago) but it subsides and then reappears with no distinct pattern. best guess is a bad wheel bearing but it’s never gotten any worse; other guess is transfer case/ chain problem but 4x4 use isn’t much and it goes in and out of 4x4 mode with no problems. We’re rather stumped…Anyone with same problem or different ideas ? Thanks. ---
**Author:** ![GSragtop](https://avatars.discourse-cdn.com/v4/letter/g/7c8e57/32.png) [@GSragtop](https://community.cartalk.com/u/GSragtop)\ **Post date:** [June 1, 2012, 2:38pm UTC](https://community.cartalk.com/t/intermittent-noise-on-2008-f150/72783/2 "2012-06-01T14:38:13Z")
Is it actually a metallic sound??? Have you noticed the sound more when useing the AC?? ---
**Author:** ![racingus](https://avatars.discourse-cdn.com/v4/letter/r/d26b3c/32.png) [@racingus](https://community.cartalk.com/u/racingus)\ **Post date:** [June 2, 2012, 6:14am UTC](https://community.cartalk.com/t/intermittent-noise-on-2008-f150/72783/3 "2012-06-02T06:14:00Z")
Somewhat metallic but not real tinny; no noise correlation with the ac; can hear with the climate system off.