Hi, thanks for taking the time to read this and possibly help. I have an 05 3.5l Maxima. I can't get it to ital at all. I can get it to start then it dies almost immediately. Good battery good alternator. No codes. Just replaced the cam and crank sensors. When I got the vehicle it didn't have any cats on it. So I bought those put them on it and that all seems ok had to cut a piece to make it fit but I got it regardless. Would the MAF cause this?? Shouldn't it still try and Ital at least stay running if you pop that off?? I've been trying to figure this out forever now. I did replace the spark plugs and boots. Had some problems with getting the pelblem or intake to sit right but im pretty sure I got that. So Im lost Ik what else could be my problem its been bout 3 months fighting with this car. And all I can get it to do is fire but it immediately dies unless I hold down the gas pedal! Help please!!!!!!!?