What do you think about the idea of starting the search with the parts that don't give any information to the ECU? Because one thing is known, you can't read out an error. For example, a broken lambda sensor, a broken MAF sensor or a broken accelerator pedal will give you information to the ECU. But does a coil pack, for example, or ignition cables do that too?
You've probably been browsing US Mustang forums? There are hundreds of users with all kinds of electrical problems.
