Originally Posted by
az3579
That isn't 'cylinder deactivation', that's just how fuel injected vehicles are designed. 'Cylinder deactivation' is an actual gas saving feature of some V6 and V8 cars where it disables a certain number of cylinders (not all) while at steady state cruising, hence why I'm making it such a point to be careful with using that terminology as it can confuse people.
And no, there is no rumble when they reactivate on our M54's, not on a properly running car at least. The OP said this is happening when coming to a stop going from 1st to neutral. By then the injectors have long reactivated (they kick in once the revs hit 1200RPM or below). I think you're feeling something else, not the injectors kicking in/shutting off. Are your engine, tranny, and diff mounts good condition? Guibo?
In a normally operating engine, you'll never feel your injectors activating/deactivating.
OP, you really should take a video of this happening so we can see what is going on when you say it vibrates.
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