I recently swapped a 97 4.6 into a 96 3.8 Thunderbird. I switched the computer and the v8 wiring harness and after firing it back up it only runs on 6 cylinders. I don't have cylinders 2 or 8. I swapped coils left to right and the same cylinders are dead leading me to believe the coils are good. I don't know how to diagnose this, it seems if the coil is getting power all four posts should work. I have 2 codes p0340 and p0350 I don't get oil pressure either but I believe i need to swap to the 96 pressure sender and the wiring is the same? Also need to make sure the temp gauge is working seems to stay way to cool, the fan is working because I hear is cycling on and off. I drove the 4.6 car home so I know it ran good, I swapped rear ends but left the fuel tank as the pumps have the same part number v6 to v8 which seed a bit odd. This is killing me because my wife is driving an V8 Excursion 60 miles round trip to work until I get her car back on the road. So A N Y help will be appreciated! I need to convince this car its no longer a v6, It needs to let go its a big boy now and needs to step up.