Q: Re 300c misfire in cylinders, as per shop wires are fine, coils okay, they said ecm but after replacing still have error codes.

asked by on December 11, 2017

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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