Check the hose clips for tightness and examine the trunking for any cracks or splits and with every the vacuum system, the small bore pipes and fittings for cracks and missing parts. The best mannerism to locate a leak is to have the engine government and warm and next vaporizer lighter gas /propane or brake cleaner all but each joint in turn. If the engine rev s taking place you ve found your leak.
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 defect find if you unplug the meter and manage the engine without it. if the engine condition is the thesame after that chances are the meter or the attachment to it is faulty. Its plus worth cleaning the MAF sensor wires, as they can acquire coated once dirt higher than era which next offsets the reading. Use some log on cleaner or brake cleaner to spray onto the wires to remove the dirt upon no account touch the wires considering everything as they are entirely fragile
I don't have any check engine lights unless I unplug the MAF sensor. following the MAF is plugged in later the car will stall unless I put my foot on the accelerator. There is afterward an intermittent popping unassailable coming at idle.