Engine turns over, stalls out and alarm goes off

These vehicles use Fords Securilock transponder system to prevent vehicle theft. Basically, there is a little radio chip in the key that transmits a code to the computer when you start the car. If this code doesn't match the computer, the computer disables fuel and spark so the engine won't run. If you have a spare key, try that to see if it works. If it doesn't work, then the Securilock system needs service. Unfortunately only the dealer can service this system because it is integrated into the vehicle computer.

If your spare key works, then the key you tried to use has a damaged transponder and the key needs to be replaced. If you don't have a spare key, contact a locksmith and have them make you a new key. I have to warn you, transponder keys are not cheap. They can cost easily $75 and some even go for $150. But, that is probably cheaper then having Ford make one and even if the spare doesn't work, when you get the system fixed by the dealer they can program your spare key as well so you don't waste the money on the key.