Same here...mine pulls just slightly to the right...had an alignment and the shop said it was so close to correct that they could not adjust it. The steering wheel is level on the parallel plane for the straight ahead ,,,wonder if switching the two front tires/wheels would make a difference?.. there is a slight inside wear on the inside of the left tire...Carl

 

Get the front wheels off the ground, start the engine, center the steering wheel. It should stay centered.

If it's not external drag maybe the steering box has a problme.

What if the alignment was done and the steering wheel was not centered
and then the "mechanic?) removed the steering wheel to correct.

Gotta be something in that steering box that centers the pitman arm or whatever it's called. The lever that connects the gear box to the steering linkage.

 

How many miles on your car?

 

74425 is what it read as i pulled into work this morning.

 

First thing I do is to eliminate the tires:
1) Check pressure
2) Test
3) Swap sides (yes I know about directionals, this is just a test)
4) Test again - any change
5) Inflate to 40 psi
6) Test - any change

If there is no change with different inflation and after swapping sides, it is probably not the tires

Next worn bushings and/or ball joints can make alignment change when stressed. Will read perfectly on the rack but change when driving. This can also cause abnormal tire wear.

At 70k I would not expect such wear but depends on the coditions of the 70k - if 10 miles a day on a dirt road in southern AZ all bets are off.

"Gotta be something in that steering box that centers the pitman arm "

Actually not really, it is the amount of caster angle that is dialed in that centers the steering. PS just reacts to input forces unless broken or clogged. If you feel the steering is pushing at you, flush and refil the PS system.

 

Unbalanced Power Assist – If you have leaks in the control valve they need to be sealed. Check this by raising the wheels with the engine still running. Off-center steering could route the hydraulic pressure to one side over the other of your boost cylinder piston. This will cause your steering to turn more to one side or the other by itself. If this is your problem, the steering gear or control valve assembly should be replaced.