tacoma pulls and swerves

At highway speeds my tacoma randomly pulls to the driver and passenger side, it requires constant steering wheel input to keep it in a straight line. Below highway speeds it tends to only pull to the passenger side. Any ideas what could be wrong?

I recently had the driver side upper ball joint replaced and an alignment, the new alignment was good for about 2 weeks, now it wonders and pulls worse.

Any input is appreciated

 

jack the truck up and check for play in the tire, bad tie rods will screw an alignment in no time

 

Is it lifted? Stock UCAs with a lift can do that

 

Truck is stock with exception of 265/70/17's,

If tie rods are bad how much money to replace?

 

Gonna do it yourself or take it in? Parts shouldn't be too expensive

http://www.tacomaworld.com/forum/suspension/239369-tie-rod-replacement.html

 

Id probably take it in

 

You might need new steering rack bushings.