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...,

by in Hobbs, NM on May 05, 2013
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2 answers
ANSWER by , May 06, 2013
POSS TO LATE TO REPAIR IF IT HAS A KNOCK.
ANSWER by , May 05, 2013
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