98 ZJ gauges not working, stalls after starting

Hi everyone,
I've done a lot of research on this but I can't seem to find any concrete answers on how I should start troubleshooting this. Any help or suggestions would be greatly appreciated.

Jeep GCL ZJ 5.2L

The gauges are not working. The engine starts easily but stalls almost immediately. I can give it some gas and it will run for about four seconds, but then stalls even if I stay on the gas. Sounds like it's running fine when it starts and before it stalls. The oil gauge blips up a bit when it starts.

The dash lights (ABS, Check Engine etc...) come on like normal when the ignition is in the accessory position. The A/C blower fan comes on. The radio and power windows/locks work. Check engine light doesn't stay on.

From the research I've done, it seems like the fuel pump and CPS are okay. Is there possibly a ground spot or relay that is related that I could try. All of the fuses under the hood look okay. I cleaned the two ground connection beside the battery on the passenger side fender.

I'm very thankful for any suggestions on where to start trouble shooting this.
Thanks,

 

Check the ground wires between the engine and frame.