2002 National- Islander, 40 ft. - Cummins Diesel. on trip to Bremen,In.in Sept.2013 our coach quit running and after pulling off to side of road we determined engine was idling but when pressing gas peddle unable to increase RPM's and then coach died. Coach immediately restarted and we continued for about an hour and then same thing happened EXCEPT, after engine died and I turned key to restart there was no electrical in the dash. After a few tries it come back to life and restarted. Had this problem in the past and replaced ignition which didn't help and then cleaned up all ground wires that I could find and that seemed to solve the problem at least for a while. One occasion in which this happened it appears the cause was battery cables vibrated loose and after tightening problem seemed solved. August 2013 happened again and was able to get to the Cummins Dealer and computer readout said fuel transfer pump was going bad. Pump replaced and it was about 600 miles before issue popped up again. Looking for IDEAS/THOUGHTS

coach quit running and after pulling off to side of road we determined engine was idling but when pressing gas peddle unable to increase RPM's That to me sounds like the electronic gas pedal is not operating correctly?I dont think the transfer pump comes into play once the engine is running?at least thats how i thought things worked?

Did you replace the ignition switch or ignition SOLENOID. I would check the solenoid.

prism wrote:coach quit running and after pulling off to side of road we determined engine was idling but when pressing gas peddle unable to increase RPM's That to me sounds like the electronic gas pedal is not operating correctly?I dont think the transfer pump comes into play once the engine is running?at least thats how i thought things worked?Heres what little I know about a Cummin's and its fuel pump issues since I had the problem.The 5.9 Cummin's has two fuel pumps. The first one is what I suppose we are calling the transfer pump. It does in deed run all the time. When the engine is running at full load or idle. The secondary pump is what I heard referred to as the injector pump. Thats the puppy that forces the fuel to the injectors. Very expensive unit.The Cummin's will run with the first (transfer) pump completely in-operational. The injector pump will actually pull the fuel from the fuel tank to its injectors but at a very reduced rate, not enough to run at road speeds. And some backfiring and some black smoke. My input is from the experience I had in UT and ended up with at 90 mile towing to replace the "transfer" pump...about a $180 item. Its electrical was completely burnt up and the pump completely inoperational. But I could move at 20 to 30 mph.

We just now had to have the fuel pedal replaced.....Ours immediately died - absolutely no warning. We were so fortunate to have space to coast to the side of the road. After a while it would start and run again...until next time. Very scary. We limped from Flagstaff to Phoenix and had it replaced there. By the way, it was a Spartan part, not Cummins.

2gypsies wrote:We just now had to have the fuel pedal replaced.....Ours immediately died - absolutely no warning. We were so fortunate to have space to coast to the side of the road. After a while it would start and run again...until next time. Very scary. We limped from Flagstaff to Phoenix and had it replaced there. By the way, it was a Spartan part, not Cummins.You had the fuel PEDAL replaced??? Tell me more as I don't understand.

Cummins engine dies and then !!! | Good Sam Community

2gypsies1
Explorer III
Oct 13, 2013
We just now had to have the fuel pedal replaced.....Ours immediately died - absolutely no warning. We were so fortunate to have space to coast to the side of the road. After a while it would start and run again...until next time. Very scary. We limped from Flagstaff to Phoenix and had it replaced there. By the way, it was a Spartan part, not Cummins.
hershey
Explorer
Oct 12, 2013
prism wrote:
coach quit running and after pulling off to side of road we determined engine was idling but when pressing gas peddle unable to increase RPM's

That to me sounds like the electronic gas pedal is not operating correctly?
I dont think the transfer pump comes into play once the engine is running?
at least thats how i thought things worked?

Heres what little I know about a Cummin's and its fuel pump issues since I had the problem.
The 5.9 Cummin's has two fuel pumps. The first one is what I suppose we are calling the transfer pump. It does in deed run all the time. When the engine is running at full load or idle. The secondary pump is what I heard referred to as the injector pump. Thats the puppy that forces the fuel to the injectors. Very expensive unit.
The Cummin's will run with the first (transfer) pump completely in-operational. The injector pump will actually pull the fuel from the fuel tank to its injectors but at a very reduced rate, not enough to run at road speeds. And some backfiring and some black smoke.
My input is from the experience I had in UT and ended up with at 90 mile towing to replace the "transfer" pump...about a $180 item. Its electrical was completely burnt up and the pump completely inoperational. But I could move at 20 to 30 mph.
wolfe10
Explorer
Oct 12, 2013
Did you replace the ignition switch or ignition SOLENOID. I would check the solenoid.
prism
Explorer
Oct 12, 2013
coach quit running and after pulling off to side of road we determined engine was idling but when pressing gas peddle unable to increase RPM's

That to me sounds like the electronic gas pedal is not operating correctly?
I dont think the transfer pump comes into play once the engine is running?
at least thats how i thought things worked?

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Cummins engine dies and then !!!

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