I also seem to have the same problem with "drifting" and "floating" It's a 95 neon SOHC w/ power steering. The check engine light is on and the diagnostics said it was "Power Steering Pressure Sensor Rnge/Perf". Would it just be the sensor that's causing the drift or worse? Fluid level is good also. Thanks.

 

It may be just the sensor and it is probably inexpensive.I would do a thorough check of all the steering and suspension components.Make sure the bolts holding the rack and pinion are tight also.You could also rotate the tires ft to rr and see if it changes.