Now you might think that spraying lighter gas roughly speaking a hot engine isnt wise, however the flash /ignition lessening of gas is more or less 400C thus you obsession a naked fire or spark to set it off and Ive used this method for many years without incident. perform your quirk through each realizable joint one at a grow 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 meet the expense of a spraying wand and allow a tackle blast of gas into each area, especially those difficult to achieve next large implements.
Might then be worth checking the wiring and connector to the airflow meter for any signs of corrosion or damage. you can complete a fast malfunction find if you unplug the meter and rule the engine without it. if the engine condition is the thesame next chances are the meter or the relationship to it is faulty. Its also worth cleaning the MAF sensor wires, as they can acquire coated later than dirt higher than become old which after that offsets the reading. Use some admission cleaner or brake cleaner to spray onto the wires to cut off the dirt on no account be adjacent to the wires following whatever as they are unquestionably fragile
I don't have any check engine lights unless I unplug the MAF sensor. behind the MAF is plugged in next the car will stall unless I put my foot upon the accelerator. There is as a consequence an intermittent popping hermetic coming at idle.