Just wondering what you think? I had 2 codes p0300 which is misfire detection and a p0172 system too rich bank 1. Test drove vehicle while watching the misfire graph and cyl 1 and cyl 2 had several hits so i changed the plugs..After thst vehicle runs good but has no power up hills the check engine flashes but dont store any codes or sets any history codes...Any suggestions....
Apr 13, 2010 at 5:59 PM