Since changing O2 sensors engine light has come on and stays on. Shop checked out sensors and light went out, but came back on. Diagnostic: Exhaust Gas Recirculation Flow Insufficient. Maybe one or more of the O2 sensors are bad? Or the EGR valve needs replacing? The injectors are not getting the right mix. It idles smooth, but acceleration is sluggish, gas milage is terrible 9.8 around town.

 

sounds like there is a issue in the EGR system

 

Yeah I would check the EGR valve first. That diagnostic doesn't seem to point to faulty O2 sensors.