1973 Ford F250 V8 Two Wheel Drive Automatic 87000 miles
I was driving on the fwy when I smelled fluid burning. I pulled over and found that my power steering pump was pushing the fluid out the refill tube, and the pump was making a howling, grinding noise. I went to the nearest auto parts and filled the steering pump to proper level. The noise went away. I then drove around town with no problems. The next day I was again on the fwy for about 20 miles and started to smell the fluid again. I pulled over and found the same problem with the fluid comming out the fill tube. I do have the dip stick in the tube. So I bought and installed a new pump, flushed the system, replaced both the return and high pressure hoses and checked. Everything seemed ok. I drove around town for at least 15 miles and it worked great. Then the next day I was again on the fwy for about 25 miles when I started to smell the fluid again and found the same problem with the fluid comming out the fill tube. It seems that this only happens when the truck is driven at a higher speed for 20 or 30 miles on the fwy and not city driving. Im at my witts end. Any answers?