Quote:
Originally Posted by chrisl
And that is incorrect. With the majority of modern cars (possibly all of them), the injectors are turned off when coasting in gear. The engine becomes an air pump. There's no reason why you would need to be burning any fuel - the engine is kept running by the driveline.
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I was just sayin this then pete made me go ...wtf ...so I deleted it and now im sayin it again cuz I figured maybe it was just on my old 240.
Injector Pulse width is 0 Milliseconds in gear and 0 throttle. ...look at your fuel and timing maps. pretty sure all cars use this same type of idle air protocol and its why you usually have some tyoe pf idle air control valve to compensate for this fact when the car is in neutral and unable to maintain RPM due to driveline.
The computer recognizes a stall condition and switches to an idle protocol and begins injecting fuel