Crown vic has been running rough like water in gas. new fuel filter nothing , battery is fine would not even turnover today nothing

Not turning over with a good battery could be a bad ground connection, more likely though could the starter. As for running rough "like water in the gas" most likely is one or more of the "coil packs" over the plugs have gone bad. I recommend to first get the engine codes scanned even if the engine light is not on, the computer will store the codes. look for misfire detected in cylinder #__ . That way you can try using dielectric grease on that spark plug boot to see if it cures the misfire. If this does not cure the misfire you may want to replace the coil pack. However do not replace them blindly as they are in the $50 per unit range. I have had to replace one coil pack on mine and when a second misfire occurred I fixed it by cleaning the spark plug boot and using dielectric grease. I hope this helps.