Check the hose clips for tightness and inspect the trunking for any cracks or splits and afterward all the vacuum system, the little bore pipes and fittings for cracks and missing parts. The best mannerism to find a leak is to have the engine government and warm and next vaporizer lighter gas /propane or brake cleaner vis--vis each joint in turn. If the engine rev s going on you ve found your leak.
Might plus be worth checking the wiring and connector to the airflow meter for any signs of corrosion or damage. you can reach a quick malformation find if you unplug the meter and rule the engine without it. if the engine condition is the similar next chances are the meter or the link to it is faulty. Its as a consequence worth cleaning the MAF sensor wires, as they can acquire coated once dirt more than period which after that offsets the reading. Use some contact cleaner or brake cleaner to vaporizer onto the wires to cut off the dirt on no account lie alongside the wires later than everything as they are certainly fragile
I don't have any check engine lights unless I unplug the MAF sensor. taking into account the MAF is plugged in next the car will stall unless I put my foot on the accelerator. There is along with an intermittent popping unassailable coming at idle.