Erratic steering

I purchased a 2000 Jeep Wrangler se 4 cylinder. Steering gets squirrelly around 50 mph. I have replaced the track bar, the steering stabilizer, and made sure everything is tightened. However, still having issues with the steering. Can anybody offer any advice ?

 

Sounds like an Alignment issue.

 

Less likely then alignment but possibly a tire with broken belts also.

 

Soooo much more can be involved. Tie rod ends, control arm bushings, sector box, unit bearings, and ball joints among them. The best way to ferret this out is get the front axle off the ground with jack stands under the frame so there is no weight on the steering gear and then start checking every component for play that shouldn't be there. An alignment shop will do this but most of them will just replace everything-obviously on your dollar.

 

Not knowing your experience level...
Does the Jeep have a lift installed? Good place to start.
While your at the Alignment shop. No harm in gettin your tires rebalanced....
A good Alignment Shop will find your issues.

 

I had a similar issue with my 2015 JK. It was the steering gear box. With the front end on jack stands, I clamped a pair of vice grips on the steering shaft. I could turn the steering shaft about 40 degrees back & forth before the pitman arm would move at all.