Cummins ISL400 runs and quits... questions
I'm currently stuck in a RV campground with a engine that won't run. I called and talked with the nearest Cummins service center and the tech on the phone says he thinks it's the lift pump. The pr...
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Thanks everybody for your responses. I found the source of the problem. It is in the house electrical system. The Intellitec Monoplex system is acting strange and has a red light blinking in one of the modules about every 30 seconds or so. The light is labeled comm fault. I turned off the house system at the batt disconnect, leaving just the chassis side on and the engine fired right up and runs without problems.
The tech I've been talking to at South West Diesel in St George Utah is experienced with this Intellitec system and says it sounds like a low voltage/faulty 12v power supply to the system due to a bad connection. He doesn't know why it would interfering with the chassis side and be shutting the engine down, but they do interface with each other so I guess it's one of the mysteries of electricity.
Anyway... I'll be able to drive it to him and he'll trouble shoot it and see if he can find what the problem is with the power to the house side.
Obviously a big relief that no towing will be necessary and it looks like our trip can proceed even if the house system doesn't get fixed due to a bad module or whatever. Running with the house 12v off only shuts down the lights and water pump. Everything else is on the inverter so it's not really much of an inconvenience.
Thank again for taking the time to help..... Marc
The tech I've been talking to at South West Diesel in St George Utah is experienced with this Intellitec system and says it sounds like a low voltage/faulty 12v power supply to the system due to a bad connection. He doesn't know why it would interfering with the chassis side and be shutting the engine down, but they do interface with each other so I guess it's one of the mysteries of electricity.
Anyway... I'll be able to drive it to him and he'll trouble shoot it and see if he can find what the problem is with the power to the house side.
Obviously a big relief that no towing will be necessary and it looks like our trip can proceed even if the house system doesn't get fixed due to a bad module or whatever. Running with the house 12v off only shuts down the lights and water pump. Everything else is on the inverter so it's not really much of an inconvenience.
Thank again for taking the time to help..... Marc
