2002 Ford Taurus SEL, DOHC Misfiring

i think its the ecu, i had misfire codes come up in my 06 explorer, changed everything like you did, it was the ecu, i got one on ebay with keys for 150, it worked, also ford systems require a fully charged battery

misfiring is also from injectors and low fuel pressure. To be all on the same side I suspect injector wiring ( possible loose connection on the ECM). Have a compression test done to delete mechanical problems (valves)

What engine? 3.0 OHV or 3.0 DOHC

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Have you had it scanned anywhere. If its misfiring, the computer will read it as a misfire. if it is misfiring, the probable cause is the fuel injector. have you changed the plug wires with the plugs?

i would check the plug wires and the coils you check the plug wires for bad spots at night start the motor up and look at the plugs if you see a spark arch out the wire and to a peace of metal then the plug wires need to be replace.

Ok the P0301 code means that your engine is misfiring on the first #1 cylinder so that is good you know where it is coming from. The P0316 Code means that your engine is misfiring in the first 1000 revolutions of the engine starting. What i would suggest you do is change the plug and wire on cylinder #1. If this doesn't solve your problem then you can go to your coil packs and change that. If that still doesn't solve your problem then it may get difficult leading to an injector. But i am almost positive that it is going to be no more then a plug wire or coil pack!

havent a clue here ,one cylinder now another missing ,only one thing comes to mind here and thats the coil pack ,check the voltage across the battery with engine running at 1500rpm and if its higher than 15.5 volts of their abouts then the alternator regulator is playing up and this would cause problems with the coil pack or the ECU ,also the radio could blow and lots of bulbs.Other that this i would need to get my greasy hands on it and give the magic hammer treatment

chek coil pack for weak spark

I would suggest replacing the coil pack. Thanks and good luck with your repair.

check transmission fluid.change fuel filter and air filter.try changing up on where you buy gas .because bad gas causes problems.