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BF Ford Falcon fuel consumption

My 2005 BF Falcon Futura has suddenly begun to consume too much fuel. One mechanic told me it looks like a software issue and to go to a Ford dealer. What can I do?

If it is also running poorly check the engine tune and things like the spark plugs, leads, filters, coils, and perhaps clean the throttle body. You really need to get a competent mechanic to check it. I doubt that it is a software problem, but a dealer could check for sensor problems etc.

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