Check the hose clips for tightness and inspect the trunking for any cracks or splits and with every the vacuum system, the little bore pipes and fittings for cracks and missing parts. The best habit to locate a leak is to have the engine management and warm and subsequently vaporizer lighter gas /propane or brake cleaner as regards each joint in turn. If the engine rev s happening you ve found your leak.
Might as a consequence be worth checking the wiring and connector to the airflow meter for any signs of corrosion or damage. you can attain a fast defect find if you unplug the meter and direct the engine without it. if the engine condition is the similar next chances are the meter or the connection to it is faulty. Its next worth cleaning the MAF sensor wires, as they can get coated later dirt higher than mature which then offsets the reading. Use some edit cleaner or brake cleaner to spray onto the wires to cut off the dirt upon no account be adjacent to the wires subsequent to whatever as they are enormously 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 on the accelerator. There is along with an intermittent popping sound coming at idle.