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Dan, Technician
Category: Ford
Satisfied Customers: 23490
Experience:  Independent Shop Experience, 2 Year Automotive Diploma, & Access to Information Database
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power, black smoke..cylinder..) injector 8, b) wiring harness, c) ficm

Resolved Question:

Codes po284 and po611 both showed up, loss of power, black smoke. It says number 8 cylinder injector failure then part two of message states ficm failure. Should I replace a) injector 8, b) wiring harness, c) ficm or any suggestions you may have
Submitted: 6 years ago.
Category: Ford
Expert:  Dan replied 6 years ago.

You can swap injector with another cylinder to see if problem moves if so replace, if not check wiring. If wiring is good replace the ficm.

Customer: replied 6 years ago.
Replaced wiring injectors is s huge job so injector first then ficm?
Expert:  Dan replied 6 years ago.

To know for sure where the problem is swap the injector to see if problem moves. If not you will need to do a resistance test on wiring between injector and ficm to see if the wiring is the problem or the ficm is the problem.

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