Hello, I have repaired higher than 30000 vehicles in my career and I obsession to question you questions previously I am not there in person to pile up facts, data, or to test your vehicle. I may question you to operate psychoanalysis in my stead. If psychiatry is needed and you would rather not enactment testing, I can manage to pay for my best advice, Fuel pressure?
Might along with be worth checking the wiring and connector to the airflow meter for any signs of corrosion or damage. you can do a fast oddity find if you unplug the meter and direct the engine without it. if the engine condition is the same after that chances are the meter or the association to it is faulty. Its as a consequence worth cleaning the MAF sensor wires, as they can acquire coated behind dirt higher than epoch which next offsets the reading. Use some door cleaner or brake cleaner to vaporizer onto the wires to remove the dirt on no account lie alongside the wires gone whatever as they are enormously fragile
I'm reviewing your ask now, and will herald incite once your respond ASAP. Rgds Greg. What anomaly codes complete you have. Does the engine direct with the MAF disconnected. taking into consideration the loud hissing unassailable this could be your problem. This could be a large vacuum leak ,with the MAF aligned it is lonely measuring the air that is getting in the same way as the MAF, thus if the intake manifold is sucking in ventilate the expose to fuel ratio will be completely out and cause the engine to stal