Now you might think that spraying lighter gas roughly a hot engine isnt wise, however the flash /ignition dwindling of gas is just about 400C hence you habit a naked fire or spark to set it off and Ive used this method for many years without incident. law your showing off through each realizable joint one at a become old and you should locate it. I use a slightly flattened fragment of brake pipe and some rubber hose from the can of lighter gas to present a spraying wand and permit a talk to blast of gas into each area, especially those hard to attain in imitation of large implements.
Might as well as be worth checking the wiring and connector to the airflow meter for any signs of corrosion or damage. you can complete a quick deformity find if you unplug the meter and govern the engine without it. if the engine condition is the similar next chances are the meter or the relationship to it is faulty. Its plus worth cleaning the MAF sensor wires, as they can acquire coated past dirt over period which then offsets the reading. Use some read cleaner or brake cleaner to spray can onto the wires to surgically remove the dirt upon no account be adjacent to the wires subsequently whatever as they are categorically fragile
I don't have any check engine lights unless I unplug the MAF sensor. taking into consideration the MAF is plugged in later the car will stall unless I put my foot upon the accelerator. There is in addition to an intermittent popping hermetically sealed coming at idle.