Poly bushings, and maybe lowered car, could cause this.
Poly bushings can wear out, even without
making any noise.
Any bolt goes thru Poly bushing must be tight. They have no teeth to bite as OE rubber does and inner sleeve can move easier for this.
edit to add img
Rack/column problem are easy to find... Start See my Cave, Steering
------------------Dr. Ian Malcolm: Yeah, but your scientists were so preoccupied with whether or not they could, they didn't stop to think if they should.
(Jurassic Park)The Ogre's Fiero Cave
(It's also at the top and bottom of every forum page...)
[This message has been edited by theogre (edited 09-24-2014).]