I’ve heard people say that fuel injection automatically turns off when you let the car coast in gear, but if I completely let off the accelerator in first gear, the car will only slow down to 3-5mph (depending on the car) and will then stay at that speed indefinitely like a lil’ cruise control, suggesting that the car was always injecting fuel at engine idle ratio?
I understand this kind of question has been asked before, but as this element doesn’t check out, I don’t believe it has actually been completely answered.
In: Engineering
In Carburetted engines, there are two fuel circuits, one for idle which is always spraying minimum fuel adjusted by the idle control screw irrespective of throttle input and one connected to your throttle directly that increases revs proportional to input. I’m assuming the same is either present or at least emulated by the Engine ECU.
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