wont start: NEED HELP

no spark,changed ignition coil,ignition module,checked dist cap and rotor button, all good.do have a weak spark when turn key off after turning over.

Have you checked into the TFI (thick film ignition) module...if you have one. Ford had a huge lawsuit because they were faulty, and have caused MANY Ford cars and vans not to start, or to stall. We spent 3 weeks trying to figure out this problem on our Ford. We put in a new duraspark ignition system, starter, alternator, battery etc etc etc....After much serching it was the TFI module.