This could be an airleak after the airflow meter, any air dragged in here isn t seen by the ECU and for that reason not compensated for and can lean the engine out and can next permit the engine to rev going on gone not desired causing harsh running. As its a mechanical aberration it tends not to slant upon the aberration light and you can sometimes listen a hissing noise similar to the engine running.
I bought it in July, drove it house from LA (to Utah), and the problems started hastily after I got it home.Any other encourage you can allow is appreciated. I don't know what else to do but understand it back to the dealer. I know I've got the shop foreman operational upon it at the dealer, but I yet feel its pushed to the back up as its old-fashioned and everyone loses in this situation.
This could be a large vacuum leak ,with the MAF similar it is unaccompanied measuring the ventilate that is getting in the same way as the MAF, consequently if the intake manifold is sucking in freshen the ventilate to fuel ratio will be agreed out and cause the engine to stall. If MAF is disconnected the engine goes into a limp measurement and lets the engine run. past carb cleaner vaporizer spray can in the area of the hissing in the same way as the engine organization and next you listen the engine stall or rev innovative there is the leak ,could be a bad vacuum hose bad gasket upon the manifold.