Originally Posted by BYuen
Go ahead and change out the u-joints. Sometimes they won't have any play in them but will seized up. If the problem still persists after you change the joints, then you know you have to look elsewhere.
quote for truth, just replaced mine for the same reason, I got five years out of the Napa non greasable ones. went for the presicion greasable through the cap ones from Napa this time. Completely cleared up my jerking wheel. There was no play in the joints but once I was able to move the joint around by hand they felt like all the rollers were square. and were very rusty inside.