After starting the car the engine light, seat belts, fuel light all sensors go off indicating a problem at the same time all the gauges will zero out the gas gauge will go to empty and the car will almost stall. This lasts for 20-30sec then the gauges go back to normal for a period of time then reoccurs I have had the car to both Chrysler dealersghips in my area and they both state that there are no codes when the dealership conducts their test. Milage 30k. The dealer check the grounding cable but said that it is ok.

 

I have seen ign switches do this

 

What does an IGN switch do

 

Ignition switch