Started it this morning and no rough idling. Even seems that the IAC was working fine. Drove a few miles and the dreaded CEL came on again. Went to AutoZone and had P0171 and P0174 come up. Car idles nicely since I tightened down the EGR bolt. Car idles rough for a moment when it is warm just after I start it. I had the O2 sensors replaced 73000 miles ago. Also the car pings at just about any speed with medium throttle.
Suggestions???
