What is a lube job ?

Vehicles of today -- and even 20 years ago like your Ford Explorer from 2001 - don't have many "zerk" fittings where a grease gun is mounted to grease steering and suspension components. Instead, it is necessary for a local shop to lubricate slip yoke splines and make sure there's enough grease visibly in tie rod ends and lower ball joints. Beyond that, not much to be done. As far as the looseness and instability - you really should have this vehicle checked for loose, worn or out of adjustment components as soon as possible; damage further may occur or a safety issue too. www.repairpal.com/repair-shops