Hello FJ owners> On My recent elk hunt in the East Kootenays the check engine light came on. The codes included P0171 and P0174. I have read the possible causes these report. In addition the motor is hunting> It goes from 1500RPM to 500 and usually settles around1000 or sometimes stays at 1500. There is also a miss-the reader mentioned this as well. The lights came on for traction control, SS, VSC OFF, VSC TRAC. Any thoughts? There does not seem to bemuch info that I have found> Thanks for any ideas, Dave.