August 25, 2014

I have a 1993 Ranger 4.0. I had to replace the power steering pump. Both after market pumps squealed as if there was no fluid, which there was. I then tried a rebuilt Ford pump. Same result. I never had the squealing on the original pump but each replacement does the same thing. My mechanic tried a vacuum pump to be sure all the air was out of the system but that did not help. Any other Ranger owners had this problem. Any solutions?