No, absolutely not. It has to be Mass Air Flow cleaner, The sensor has very sensitive small resistors that have a layer of clear coat on them to protect the resistors. You'll damage the coating on the resistors. You may have damaged the Vent valve with the carpet cleaner you sprayed into that as well. those valves aren't supposed to have anything spray into them, take the Air Filter box top off and look at the Mass Air Flow sensor, you'll see its a very small hot wire sensor. Also take off the Air Intake Boot that goes to the throttle body and see if the throttle plates have carbon build up on them. I think this vehicle has multiple problems, and Im assuming you live in an area where there may not be many automotive shops. Its difficult to give advice when you dont have access to the proper cleaning material and tools. If you noticed on your scan tool live data, there was a data PID listed Long Term Fuel Trim and it was about %10 positive. and sometimes it was even higher. Thats the number we need to get lowered. That number is what the engine computer is doing with fuel management. 10% is the absolute max I would allow, even then personally I think its too much. An engine that is running good would have Fuel Trim numbers around 2 to 3%.. At 10% the engine computer is adding alot of fuel to the air fuel mixture to compensate for extra air its monitoring entering the engine. I noticed it seemed to be higher at Idle when the vehicle wasnt moving. Since your vehicle has a mass air flow sensor, that means that the air entering the engine is not being read by that sensor. If it was the Fuel Trim numbers wouldnt be so high. So there is air getting in from some other place. Possibly threw the Evap system since you have 4 or 5 codes for that particular system. To get your fuel mileage up, that Fuel trim number needs to come down,
You can try blocking off the Purge valve line very temporarily and watch to see if those Fuel Trim numbers come down. Then you will know if thats where the additional unmetered air is coming from.
But as for cleaning the mass air flow sensor, Im adding below a couple of videos from our Youtube site for 2CarPros, it will give you a better idea of how to clean the mass air flow sensor and the throttle body. So start there and see if it helps, just remember the Long Term Fuel Trim is the number to watch. You want it as close to zero as you can get it,..
https://www.youtube.com/watch?v=lbI-GQObduk
https://www.youtube.com/watch?v=jBQWElA-3Zk
https://www.youtube.com/c/2carpros/videos
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Saturday, July 2nd, 2022 AT 3:50 PM