How would you check the oil pump to see if its bad...how do you change it? on 2005 Ford Expedition

It's knocking real bad...,

Get Your Car Fixed at a RepairPal Certified Shop.
We certify shops based on expertise, quality work, and verified customer reviews
2 answers
POSS TO LATE TO REPAIR IF IT HAS A KNOCK.
if its making a noise then chances are you spun a bearing but to check the oil pressure remove the op switch and install a gauge to check pressure