Forum Discussion

Neptune03dog's avatar
Neptune03dog
Explorer
Feb 06, 2014

Fuel gauge replacement and effect on generator

I have a HR Neptune 03 Cummins diesel 300hp, Onan 55oo genset diesel. My fuel gauge reads full all the time and needs to be repaired. Is this something I could do at home or does it require dealer a...
Rudyp's avatar
Rudyp
Explorer
Jun 26, 2014
You talking about the control monitor circuit board on the wall (remote start)? I too have the same problem, will start up and then stop a few seconds later,
received codes 36 and then 45. I replaced oil, oil filter, air filter, and fuel filter to no avail. Fuel in tank shows more then 1/4 full of diesel. I put over a 1/2 of diesel 1st before I did all the above, I a beginning to think it maybe the diesel fuel gauge. Any suggestions? Thanks.

About Technical Issues

Having RV issues? Connect with others who have been in your shoes.24,242 PostsLatest Activity: May 09, 2025