Engine p0300, p0201-206 misfire, but upon test no current in coil 4 so interchanged the coils but still no current in coil 4, as per shop they tested wires but said all okay, they said its the ecm so i replaced it but still have error and misfire? Could it be injectors? Or maybe wire indeed? How to test further?
I want to avoid spending unecessarily.. pls help.
My car has 42500 miles.
My car has an automatic transmission.
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