I have 2001 v6-ES. Recently I got engine check light on, then read PO301 and PO303 for the error code. I researched little bit and I decided to change Spark plug, Spark plug Wire(?) and Ignition Coil.

My questions are:

1. Does v6-ES have "Spark Plug wire"? It seems only v4 engine has it, so it is confusing.

2. For the "PO301 and PO303" error code, what should be done first to fix the problem?
Would replacing the spark plug and coil ( and wire if applicable) be the right way to go?

4. what is the good brand for the Spark plug and ignition coil?

3. If replacing plug and coil doesn't help, what is the next best shot? replacing or cleaning fuel injector?


J.