I got a 97 4.0 5sp I just finished doing a axle and T-case swap out of a 05 RUBI get in to fire it up and nothing charge the battery and it will crank but no spark no fuel and the gauges don't work i do some testing and replace the CPS. Still nothing I keep test and find out the PCM has a short in it I ordered one online I gave them my vin and they flashed it with the proper flash. Once the PCM got here in stalled it gauges work and I now have fuel and spark I starts but only idles for a couple sec then dies I've testes every thing I can think of and still nothing. The rig has also been setting for about 9 months while I was over seas.
Any ideas would be great. Hopefully i can figure this out because I really don't want to take it to the dealership