Jack up front of vehicle and turn the steering from lock to lock without the engine running.
Repeat steps with engine running and lower jack and retest if the steering works.
Before removal of steering pump, try removing the pressure relieve valves to check for sticking. The pump being a vane type should not be stickingk easily.
If it is disassembled, the O'rings would have to be replaced.
Sunday, January 9th, 2011 AT 9:08 PM