Power Steering problem or something more sinister? PLEASE LOOK HERE!!! While driving to work today, and other times since the motor was put in my truck, I've been feeling a "shimmy" when driving over 25mph, and even more so obviously at 55+... It feels like a lag in the steering that lets go of the wheels, then grabs them again and keeps me on track. It happens once every 1-2 seconds, and is very unnerving while driving highway speeds. I am scheduled for an oil change and alignment tomorrow morning, but should I look at the power steering fluid and make sure everything is good with the pump? or does it sound like something more serious? I've tried to move the tie rod, and it won't budge between the wheels, but then again, I didn't expect to be able to move it with my hands... Could it be that the steering stabilizer is so old that it just doesn't want to work anymore?