Hi folks, new member to the forum but have used the site a lot in the past to help diagnose problems with my van. Today I need serious help because I'm not sure where to even start with this problem. Yesterday driving home my van (3.3L flex fuel) suddenly started running poorly and seemed to have little to no acceleration. Got it home and it started to idle very rough and eventually stalled in driveway. Then it would turn over but not start. This morning it will start (eventually) but it idles very rough from 500 to 1200 rpm and even seems to backfire occasionally. There is also a noticeable "blowing wind" noise coming from the air intake tube leading to the air filter. A couple of times the "wind" noise would stop and the engine would idle fine. However, if I gave it any gas, it would try to stall out. So far there is no SES light or trouble codes with the key method. Pretty good working on van, but all the sensors give me trouble. I don't know if I should start with the EGR valve, cam sensor, crank sensor, tps, or even fuel pump/filter. Any info anyone can give to help me narrow down the problem would be greatly appreciated.