I'm getting a check engine light along with the brake and battery light on my 2000 rodeo v6 auto. The codes are 0171,0172,0174,0175(lean,rich,right,left) or some variation. If I keep driving after about ten minutes it starts acting like the alternator has gone out(dim lights, no power, transmission acts funny). If I reset the codes everythig goes back to normal, until the next time. I've tried searching the forum but haven't found anything that addresses this exact problem, or I missed it. If I don't find an answer I'm going to have to take it to a dealer (shudder) so any input is appreciated.