Have a 08 jk I've had a problem with it running lean for a few months now. Been to the shop with it 3 times now and still throwing lean codes p1071-p1074 no one can seem to find a problem. Put new O2 Sencers in it have had it smoke tested and fuel and exhaust tested computer flashed. Anyone with a 08 jk been through this before if so what did you have to do to fix it check engine light stills comes on. I still have a slite rattle now and then and stalls out when you come to a stop sign every now and then. Ready to pull my hair out!!!