For this job, I performed to check over the furnace because it would light up, but shut off right off for that. So I did check the gas valve and found the pressure coming in was low. so I adjust the pressure and was able to get that back in track. Then taking the both hoes off the pressure switch I blow into them, I also tried to take the flame rod sensor, but the screw was rusted to the shell of the burner. I was not able to get that screw break loose. After doing all these steps, I turned the furnace back on and was able to get the furnace lit and stayed on. The fan came on as normal operation. Operating the furnace on and off, the system is working. I did not find any other issue with the system