Check the hose clips for tightness and inspect the trunking for any cracks or splits and furthermore every the vacuum system, the little bore pipes and fittings for cracks and missing parts. The best exaggeration to locate a leak is to have the engine handing out and hot and then spray lighter gas /propane or brake cleaner in this area each joint in turn. If the engine rev s taking place you ve found your leak.
I bought it in July, drove it home from LA (to Utah), and the problems started shortly after I got it home.Any supplementary incite you can present is appreciated. I don't know what else to attain but take it back up to the dealer. I know I've got the shop foreman in force upon it at the dealer, but I yet feel its pushed to the urge on as its pass and everyone loses in this situation.
I'm reviewing your ask now, and will state back up taking into account your answer ASAP. Rgds Greg. What irregularity codes realize you have. Does the engine direct with the MAF disconnected. later the loud hissing strong this could be your problem. This could be a large vacuum leak ,with the MAF partnered it is without help measuring the let breathe that is getting subsequent to the MAF, hence if the intake manifold is sucking in freshen the ventilate to fuel ratio will be totally out and cause the engine to stal