Can someone give me a suggestion as what could be wrong? I am working on a 97 12 valve. No tach,speedometer,no charging voltage,no water in fuel light and no wait to start light. I have changed the pcm,ignition switch,and checked all the plugs. I have a "no communication" message at the obd connector. The oil pressure and temperature guages work fine. I am running out of ideas. Any suggestions?

 

search "NO BUS". It will have something to do with the PCM and all the wires. Could be a loose or broken wire. good luck