My wife has a 2006 Freestar, it has had a cutting out problem here and there,we figured it just needed a tune up. She said it was really bad one morning and I thought she might have bad fuel so I told her to put a bottle of heet and fill the tank with high octane fuel. After the fill up she was driving down the interstae at 60mph and the van lost power but didnt die completely so she proceeded to the next exit where it lost power again and completely died. She turned the key off and called me and tried to restart the van , didnt make a sound. I have checked all the fuses and relays all are good, battery tested well on load and charge tests, we changed fuel modulator,crank sensor,ignition switch,transmission positioning sensor. Security light flashes correctly and goes off when ignition is in the run position, you can hear the fuel pump going as well, the starter engages when you jump the solenoid . I pulled the plug on the PCM and it looks good no water issues, I have checked all the body grounds I can find ,all good there ...I Need Help Please...My wife wants her van back!!