A couple of months ago the check engine light came on. The codes were P0300,
304, 305 and 306. I used fuel injection cleaner with two tanks of gas.
Subsequently the check engine light went out and has not come back on for
weeks. It is still not on, but the codes remain. Do I still have the problem
indicated by the codes?
2002 Dakota 3.9, QC, auto and for the REDNECKFROMHELL it is Pat. Blue