This started happening to my 04 Titan a few months ago and I was just wondering if it has happened to anyone else or if anyone has any ideas on what the problem might be. When I start the truck it fires right up like normal but then it immediately goes quiet almost like it's about to die but then about a second later it comes back on again. It never actually dies but the RPM's go really low along with the sound. It's been happening for about 2 months maybe and the truck has never failed to start. And it runs great. I'm not overly concerned since it has yet to fail me but I guess I'm wondering if it could lead to a problem. does anyone out there have any ideas on what it could be and if it could end up getting worse? I'm stumped.