Hello, I have repaired higher than 30000 vehicles in my career and I dependence to ask you questions back I am not there in person to build up facts, data, or to exam your vehicle. I may ask you to fake laboratory analysis in my stead. If investigation is needed and you would rather not take action testing, I can find the money for my best advice, Fuel pressure?
Might plus be worth checking the wiring and connector to the airflow meter for any signs of corrosion or damage. you can do a quick aberration find if you unplug the meter and rule the engine without it. if the engine condition is the similar after that chances are the meter or the membership to it is faulty. Its along with worth cleaning the MAF sensor wires, as they can acquire coated similar to dirt exceeding time which next offsets the reading. Use some entre cleaner or brake cleaner to vaporizer onto the wires to separate the dirt on no account be adjacent to the wires next all as they are enormously fragile
I'm reviewing your ask now, and will make known urge on later than your answer ASAP. Rgds Greg. What aberration codes reach you have. Does the engine rule next the MAF disconnected. with the noisy hissing strong this could be your problem. This could be a large vacuum leak ,with the MAF linked it is forlorn measuring the expose that is getting subsequent to the MAF, suitably if the intake manifold is sucking in freshen the ventilate to fuel ratio will be completely out and cause the engine to stal