My Jeep has no power with any amount of throttle, I have changed the tps, map, isc, changed the injectors, the o2 sensors. It does have about 39+-psi of fuel pressure. The computer was rebuilt some time ago.
What else should I check? Also what should long term fuel trim be at?
I have seen new aftermarket cats fail very quickly, your long term fuel trim should be closer to 0, + number means its adding that much fuel above the baseline fuel map, a - number means its pulling fuel (so lean and rich respectively). A lean indication could be indication of a misfire which would explain a failed catalytic converter.
2005 Jeep Grand Cherokee - Gone but not forgotten!