Steering wheel shimmy

2004 2wd Tacoma. Odometer has 133700. on it.
Have a shimmy in the steering wheel/column that occurs intermittently in the 35-60mph range. Not present at typical interstate speeds or 70mph or so. It seems to be coming from the left front. That is if I can really tell that it is coming from the left front from just driving the car? STEERING SEEMS TO BE CRISP AND RESPONSIVE. ALIGNMENT SEEMS TO BE GOOD. Toyota mechanic said that A arm bushings need to be replaced on all Tacomas with over 100,000. This has not been done.

 

Could be bad tie rod ends (inner OR outer).

You can rule that out by jacking up one corner (with tire off the ground)
and grabbing the tire at 9 and 3 oclock, and see if there is any play (should not be any).

 

You should have your front wheels/tires balanced. An out-of-balance condition can cause the symptoms you describe, especially at 40-50 mph.

 

But remember that the same symptoms you just described can be caused by a loose rack and pinion guide. Mine was sloppy as hell and replacing the roller style guide with the updated unit made a huge difference. And it was eeeeaaaasy!

 

I second the rack guide upgrade.