99 ATX V6: Well I can turn my car on but it won't stay running. The car will start in the 32-degree mornings no problem but when it's warm (like today it is 75-degrees) it won't start. The ignition and all my lights are on but the engine dies. I got a new alternator 2 months ago and changed my fuel filter yesterday. I'm completely confused and so is everyone else. Am I having some kind of electrical short? I'm really getting frustrated and any help would be great 