This could be an airleak after the airflow meter, any expose dragged in here isn t seen by the ECU and as a result not compensated for and can thin the engine out and can in addition to permit the engine to rev taking place subsequent to not desired causing sharp running. As its a mechanical oddity it tends not to approach on the irregularity well-ventilated and you can sometimes hear a hissing noise gone the engine running.
Its furthermore worth getting the fuel pressure checked as if this is low due to a blocked filter or faulty regulator or even a not at your best pump will every consequences in insufficient fuel living thing delivered to the engine. Might next be worth cleaning out the idle swiftness run motor / valve as these acquire clogged occurring later carbon and some brake cleaner washed through helps clear things off.
I'm reviewing your question now, and will reveal help when your reply ASAP. Rgds Greg. What defect codes get you have. Does the engine control in the same way as the MAF disconnected. like the loud hissing solid this could be your problem. This could be a large vacuum leak ,with the MAF linked it is unaided measuring the ventilate that is getting behind the MAF, suitably if the intake manifold is sucking in air the ventilate to fuel ratio will be no question out and cause the engine to stal