[JOomkes]

You may want to check that you are not overloading the PCM. If you are using too many valves at 12 volts with to high an amperage, you can replace them with a 24 volt and a lower amperage that will do the same thing but not overload the PCM. Running on either 12 or 24 volts you need to also make sure that all of the solenoids are that same voltage. We had a problem with this on our robot.