Hello, I have repaired higher than 30000 vehicles in my career and I need to question you questions back I am not there in person to gather facts, data, or to test your vehicle. I may question you to function investigation in my stead. If scrutiny is needed and you would rather not work testing, I can have the funds for my best advice, Fuel pressure?
Its moreover worth getting the fuel pressure checked as if this is low due to a blocked filter or faulty regulator or even a below par pump will every outcome in insufficient fuel being delivered to the engine. Might then be worth cleaning out the idle rapidity rule motor / valve as these get clogged happening in the manner of carbon and some brake cleaner washed through helps free things off.
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 upon the accelerator. There is as a consequence an intermittent popping hermetic coming at idle.