Check the hose clips for tightness and inspect the trunking for any cracks or splits and furthermore all the vacuum system, the small bore pipes and fittings for cracks and missing parts. The best mannerism to find a leak is to have the engine running and warm and after that spray can lighter gas /propane or brake cleaner approximately each joint in turn. If the engine rev s up you ve found your leak.
Might in addition to be worth checking the wiring and connector to the airflow meter for any signs of corrosion or damage. you can realize a fast deformity find if you unplug the meter and run the engine without it. if the engine condition is the same subsequently chances are the meter or the link to it is faulty. Its in addition to worth cleaning the MAF sensor wires, as they can acquire coated with dirt exceeding become old which then offsets the reading. Use some entry cleaner or brake cleaner to spray onto the wires to remove the dirt upon no account lie alongside the wires following anything as they are unquestionably fragile
I don't have any check engine lights unless I unplug the MAF sensor. subsequently the MAF is plugged in next the car will stall unless I put my foot on the accelerator. There is in addition to an intermittent popping hermetically sealed coming at idle.