2001 Chevrolet Impala Q&A
2001 Chevrolet Impala Question: spark plug order
Code P0300 is engine misfires so I am going to say that the P0304 you retrieved is a misfire in cylinder number 4. Check the coil for that cylinder both visually and with a DVOM for the proper resistance. - Herb Ackside
Car is spuddering when I accelerate. I have a code of PO128 which told me to change the thermostat which I did and it didn't help. This is what I've been told. Converter needs changed, bad air pump...