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john -aka eauto
john -aka eauto, The Car Guy
Category: Ford
Satisfied Customers: 16154
Experience:  ase tech over 15 years in the field
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Just had complete rebuild done on my 2004 5.4 f150. oil

Customer Question

just had complete rebuild done on my 2004 5.4 f150. oil pressure around 60psi at startup then drops to about 10psi after 5min or when engine warms
JA: How old is your oil pump? Has the check engine light come on?
Customer: engine light comes on and oil pump supposed new with rebuild . engine has only 30 minutes run time on it
JA: What is the model of your '04 Ford?
Customer: f150 fx4
JA: Are you hoping to fix this yourself? What have you tried so far?
Customer: have mechanics working with it but they are stumped. change oil and filter today used 15 w40 checked for leaks put a manual oil pressure gauge on
JA: Anything else you think the mechanic should know?
Customer: no
Submitted: 1 year ago.
Category: Ford
Expert:  john -aka eauto replied 1 year ago.

did they use a ford pump? are they using a motorcraft oil filter?

Customer: replied 1 year ago.
Unsure. I will have to check with mechanic in the am
Expert:  john -aka eauto replied 1 year ago.

sounds like a bad oil pump or a bad rebuild