Is it safe to drive a car after it lost its Power steering feature due to faulty pump or fluid?

Generally not. It may seem safe, provided that you have the physical strength to control the steering without power assist, but there is another problem.

With most Power Steering systems, the fluid also acts as a lubricant for the steering gear. If the fluid all leaks out, the gear can seize due to lack of lubrication. If the steering gear seizes, the steering will become suddenly locked in whatever position it is in at the time, likely causing a crash.

On some systems, the fluid pushes a hydraulic cylinder attached to the steering linkage, and the steering gear has its own separate supply of lubricant. If you have such a system, the above may not be a concern.

AnswerIt depends on the year, make and model. For instance I drove a 1993 Ford Ranger without power steering for 6 months with no problems. AnswerIf you still have decent handling of the car without power assist, then I don't see why not. But, if you get into an accident and you were knowingly driving the car without power steering (and how wouldn't you know :-P) you might have insurance issues. Not sure about that though. AnswerIf the power steering pump itself is leaking, you might have a problem. If the pump has no fluid in it to circulate, then it can heat up and seize. This can snap your serpentine belt.