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roy, import/domestic specialest
Category: Ford
Satisfied Customers: 4845
Experience:  ASE master tech for 40 years
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Have an F550 6.0 L diesel truck. New starter, but truck will

Customer Question

Have an F550 6.0 L diesel truck. New starter, but truck will not crank.
JA: Have you checked the fuel supply? And are all the spark plugs working?
Customer: Will not crank, so we don't know. We hear something when we turn the ignition on, but motor will not turn over. We are thinking relay.
JA: What year is your F550?
Customer: 2003
JA: Are you fixing your F550 yourself? What have you tried so far?
Customer: I replaced the starter. We used a jumper cable directly from the battery to the starter. Starter turns the engine over, but motor still will not fire.
JA: Anything else you want the mechanic to know before I connect you?
Customer: How much does this cost?
JA: I'm not sure of the exact price, but there's only a $5 deposit. The rest of the price information will be on the page I send you to.
Customer: Ok
Submitted: 19 days ago.
Category: Ford
Expert:  roy replied 19 days ago.

hello, my name is ***** ***** I will be glad to assist you. please allow me a couple of minutes to gather some basic info.


Expert:  roy replied 19 days ago.

I attached 2 diagrams. there are fuses for the starter relay. check all the fuses with key for power on both sides. the one fuse from the ignition switch needs to be checked in the start position.


Expert:  roy replied 18 days ago.

Please dont forget to rate me as it is the only way I get paid for my efforts. we are subcontractors for the site and get a small portion of what the site charges you. you can hit the accept button at the top of the page or 5 stars.