My work uses an F350 diesel for one of the ambulances. We have started to notice that after driving it for a while, the motor loses power to the point that it will only go up to 55 mph. We have to pull over, shut it off and let it "reset" before it will work again. Our local Ford house said they can't find anything wrong with it. Any ideas?

Asked by Kelly Feb 13, 2019 at 08:49 AM about the 2014 Ford F-350 Super Duty XLT LB

Question type: Maintenance & Repair

1 Answer

103,215

Try taking it to another shop. Start with getting the fuel pressure and flow tested. A leaking injector can cause other injectors to cut out and loss of engine power. Loss of high pressure oil can also affect injectors. Maybe even the EGR failed to open. But it most likely will be something along the lines of a fuel pump, fuel filters, or injectors.

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