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James, Ford Technician
Category: Ford
Satisfied Customers: 3626
Experience:  Ford Senior Master Tech, Ford gas and diesel expert, ASE Certified
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My 2005 Ford F-150 won't start. Just had battery and

Customer Question

My 2005 Ford F-150 won't start. Just had battery and alternator checked and they're good. Starter is good too. Just seems there is a bad electrical connection. My positive post was pretty corroded but cleaned it off and still acts like dead battery
Submitted: 1 year ago.
Category: Ford
Customer: replied 1 year ago.
When I get a jump start it turns over fine. 12.5 volt reading on the battery.
Expert:  James replied 1 year ago.

Hello, was the starter test off of the vehicle?

Expert:  James replied 1 year ago.

If it turns over when jump started you either have a bad battery ground or starter ground. It's possible the positive cable has high resistance and is wore out as well.