Now you might think that spraying lighter gas on the order of a warm engine isnt wise, however the flash /ignition point of gas is virtually 400C correspondingly you dependence a naked ember or spark to set it off and Ive used this method for many years without incident. law your way through each practicable joint one at a period and you should find it. I use a slightly flattened piece of brake pipe and some rubber hose from the can of lighter gas to pay for a spraying wand and allow a talk to blast of gas into each area, especially those difficult to attain following large implements.
Might also be worth checking the wiring and connector to the airflow meter for any signs of corrosion or damage. you can do a fast irregularity find 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 attachment to it is faulty. Its next worth cleaning the MAF sensor wires, as they can acquire coated with dirt exceeding become old which subsequently offsets the reading. Use some edit cleaner or brake cleaner to spray can onto the wires to surgically remove the dirt upon no account adjoin the wires when whatever as they are totally fragile
This could be a large vacuum leak ,with the MAF united it is and no-one else measuring the air that is getting afterward the MAF, fittingly if the intake manifold is sucking in let breathe the freshen to fuel ratio will be no question out and cause the engine to stall. If MAF is disconnected the engine goes into a limp measurement and lets the engine run. similar to carb cleaner spray can spray can in the place of the hissing similar to the engine giving out and similar to you listen the engine stall or rev later there is the leak ,could be a bad vacuum hose bad gasket upon the manifold.