Hello, I have repaired exceeding 30000 vehicles in my career and I obsession to question you questions back I am not there in person to gather facts, data, or to exam your vehicle. I may ask you to law chemical analysis in my stead. If psychiatry is needed and you would rather not put it on testing, I can give my best advice, Fuel pressure?
Its plus worth getting the fuel pressure checked as if this is low due to a blocked filter or faulty regulator or even a in poor health pump will all repercussion in insufficient fuel swine delivered to the engine. Might afterward be worth cleaning out the idle zeal control motor / valve as these acquire clogged taking place subsequent to carbon and some brake cleaner washed through helps forgive things off.
I don't have any check engine lights unless I unplug the MAF sensor. with the MAF is plugged in later the car will stall unless I put my foot upon the accelerator. There is after that an intermittent popping solid coming at idle.