Check the hose clips for tightness and examine the trunking for any cracks or splits and then all the vacuum system, the little bore pipes and fittings for cracks and missing parts. The best way to find a leak is to have the engine direction and hot and subsequently vaporizer lighter gas /propane or brake cleaner in this area each joint in turn. If the engine rev s occurring you ve found your leak.
Might as well as be worth checking the wiring and connector to the airflow meter for any signs of corrosion or damage. you can complete a quick malformation locate if you unplug the meter and run the engine without it. if the engine condition is the same then chances are the meter or the attachment to it is faulty. Its moreover worth cleaning the MAF sensor wires, as they can acquire coated in imitation of dirt greater than become old which then offsets the reading. Use some get into cleaner or brake cleaner to spray onto the wires to separate the dirt upon no account be next to the wires with all as they are unquestionably fragile
I don't have any check engine lights unless I unplug the MAF sensor. afterward the MAF is plugged in later the car will stall unless I put my foot upon the accelerator. There is as a consequence an intermittent popping hermetically sealed coming at idle.