A weak battery is perhaps one of the most common reasons for Ford EcoBoost engines not starting. This is especially the case if the engine cranks very slowly or doesn’t crank at all. If the battery is new, then it may have not reached its full capacity yet. This is not always the case, though, so you need to investigate.
Name: Ray. Ford Model: Focus Hatchback Mk3 1.0 Ecoboost. Ford Year: 2012. UK/Ireland Location: Gloucestershire. Posted May 29. If your clutch is slipping you would notice an increase in RPM at the same time as the apparent loss of power. If there is no increase in RPM I would still suspect the turbo vacuum system first.
Jon250. Morning all. I’ve got a really intermittent issue with my daughters car focus 1.0 ecoboost 3 cyl. 65 plate. it flags up a P0036 HO2S heater control circuit bank 1 sensor 2, so xmas eve, I replaced the sensor, ran fine for a month, then came back, on further scanning I found her battery the original one, was only holding 50-60% charge
This Ford Fiesta 1.0 EcoBoost was brought into us with its oil pressure warning light on and its engine sounding a bit noisier than it should. After stripping the engine our previous guesses turned out to be correct, the wetbelt had been degrading (as they do over time) leaving deposits of rubber in the oil which were being sucked into the oil pump pick up and causing it to block subsequently
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