The ignition module is part of the powertrain module (ECU/PCM) Its located at the back driver's side of the engine compartment at the firewall. Before condemning the computer you should test the wiring going to it for powers, grounds and sensor inputs and outputs. Autozone have some popular workshop manuals for free on line once you register (for free) on their website http://bit.ly/autozone_repair_info. There is also a company that independent auto repair shops buy their information from that the same information inexpensively to do it yourselfers. The information is year make and model specific repair procedures, service bulletins, component locations, wiring diagrams ect.... Alldata is very easy to navigate http://bit.ly/AllData_Repair_Manuals_Online Ford do have a bulletin about reprogramming the computer. Several companies can test the computer if you send it to them to see if it is actual fact bad. The company I use is Fuel Injection Corporation in Livermore California.