My wife drove it fine all day. The next day, it won't start. It's kind of like a whinning sound. The battery is good. The starter engages, but the engine...it's like it's not even there. If it's not the battery or starter I thought maybe fuel, but you don't hear the typical cranking sound. I've been around vehicles a little bit, and I never hear this sound. I didn't think it was a fuel problem, but someone I know said it could be a sensor. Any help would be great. Thank you!