I have this awful rattle noise on the right front (passenger side) when on bumpy roads or when I turn a corner. I have tightened the shock, battery, and some that looks like a coffee can, I just can not figure out what it is. The rattling noise is driven me nuts, does anyone have any suggestions?

Separate issue: the coffee can which is above the right wheel well had a flexible tube that was not connected to anything so I removed it. I really don’t know what is for and can not find it in the owner’s manuals.

Any help would be appreciated

Rob_F150
1990 F150 XLT

 

One of the rear leaf spring clips may have come loose.