Check the hose clips for tightness and examine the trunking for any cracks or splits and next all the vacuum system, the small bore pipes and fittings for cracks and missing parts. The best pretentiousness to locate a leak is to have the engine doling out and warm and then vaporizer lighter gas /propane or brake cleaner on each joint in turn. If the engine rev s going on you ve found your leak.
Might plus be worth checking the wiring and connector to the airflow meter for any signs of corrosion or damage. you can realize a fast anomaly locate if you unplug the meter and manage the engine without it. if the engine condition is the same then chances are the meter or the membership to it is faulty. Its as well as worth cleaning the MAF sensor wires, as they can get coated taking into account dirt exceeding era which next offsets the reading. Use some way in cleaner or brake cleaner to spray can onto the wires to separate the dirt upon no account be adjacent to the wires similar to all as they are entirely fragile
I'm reviewing your question now, and will say assist considering your reply ASAP. Rgds Greg. What aberration codes do you have. Does the engine manage past the MAF disconnected. gone the noisy hissing unassailable this could be your problem. This could be a large vacuum leak ,with the MAF partnered it is without help measuring the freshen that is getting afterward the MAF, in view of that if the intake manifold is sucking in let breathe the let breathe to fuel ratio will be definitely out and cause the engine to stal