Dazed and Confused
Join Date: May 2012
Location: Upstate New York
Re: Expedition 4WD 5.4L Oil Filter Housing leak
I've not seen any issues other than wear and tear, it is a pump after all. Since you are unable to run the engine to confirm, I have to ask, have you had to add fluid to the pump? The reservoir doesn't hold that much fluid so even a very small leak will have you adding frequently. Since the pump also runs without moving a lot of fluid most of the time, it can heat up quite a bit, expansion and contraction can cause fittings to start to leak, especially on the HP side of the pump. If it looks like the seals are intact on the pump shaft, look to the fittings. My experience with replacing pumps have been a crap shoot with getting a reliable replacement.
Ever notice that there's so many high performance parts available for GM products?
Did you ever think that maybe they NEED them?