Quit with the assist suddenly, flushed it out installed new pump still no assist or very little. no noise from pump and with front wheels off the ground it works great. when car is shut off and front wheels off the ground it turns freely by hand at the shaft going into the rack no binding felt at all
The average person does not have pressure gauges or the specs for power steering pressure. These readings would show if the power steering pump pressure is correct and then pointing to the problem being inside the rack and pinion unit.
You may be able to take the pump into a hydraulic repair shop and have its performance taken. Although they may not know what rpm your pump needs to be turning for a given pressure performance.
Could be a procedure for air bleeding is special. There was a procedure for Ranger or Chevy S10 type trucks which had strange elevation requirements for fluid to be "burped" with hoses hung higher than pump case. Once air escaped higher elevated hose, system was primed.
Make sure of simple things, like fluid is correct type. Maybe some other Expert will supply more answers.
SOURCE: HOW TO STOP THAT FRONT END SQUEAKING NOISE!! (NOT STEERING PUMP)
Probably the upper strut plates.
SOURCE: '03 Merc Mountaineer humming noise when turning
If same tires as before & air pressure set correctly, or as usual, a humming when swerving, or turning one way or the other or both, it's usually a pretty good indicator.
SOURCE: speedometer quits, loss of power steering
first of all, the power steering pump doesn't stop working and then start working usually they are just bad. second of all it shouldn't take 3 hrs to change speed sensor, and last the vss could cause all symptoms, if the car has variable assist steering the speed sensor could effect this
SOURCE: power steering pump noise on mercury villager when turning to rig
Had the same problem and the only way to fix it was replacing the steering pump.
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