I have a 2000 Ford WindStar Cargo Van, and one day I was driving, and it just stalls out. This has never happened to me before, and there were no signs to warn me about this problem. I have an idea that it could be the Coil Pack, but I'm not exactly sure. Whenever I try to start it, it wont, and theirs no sparks anymore. Can someone tell me how much it would cost to replace the coil pack if that's the case.