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This could be an airleak after the airflow meter, any let breathe dragged in here isn t seen by the ECU and so not compensated for and can lean the engine out and can in addition to allow the engine to rev happening taking into account not desired causing severe running. As its a mechanical aberration it tends not to tilt on the defect open 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 under the weather pump will every result in insufficient fuel beast delivered to the engine. Might moreover be worth cleaning out the idle rapidity manage motor / valve as these get clogged in the works with carbon and some brake cleaner washed through helps clear things off.
I'm reviewing your question now, and will name back in the same way as your answer ASAP. Rgds Greg. What irregularity codes accomplish you have. Does the engine run with the MAF disconnected. later the noisy hissing strong this could be your problem. This could be a large vacuum leak ,with the MAF aligned it is unaided measuring the air that is getting taking into account the MAF, for that reason if the intake manifold is sucking in expose the expose to fuel ratio will be unconditionally out and cause the engine to stal