I have a 2006 330 Express with a Fischer Panda (FP) 4200 diesel generator with 400 hours on it.
My FP starts and runs fine, but it has a weird thing going on. Here's my situation:
After about a hour of running perfectly with or without load, the RPM's drop down to ~10% then the RPM's go back up to ~80% then it drops again to ~10% RPM's and the process repeats up and down though never stalling.
It seems like it is running out of fuel - which I don't think is the issue because I have replaced the fuel pump, fuel filter, have a full tank of fresh diesel, swapped the Fuel pump relay several times with new ones, checked voltage to the fuel solenoid and the issue still persists. I also loosened my fuel cap to allow more air ventilation in the tank but that too did not fix my issue. Alan over at Fischer Panda Tech Support is also stumped.
It seems like my issue is temperature related since the FP runs great for an hour or so then starts to act up.
Really not sure what to do next. Test or replace a temp sensor somewhere? Test the fuel pressure? I'm stumped...
Any ideas or suggestions?
Thanks,
Jack
My FP starts and runs fine, but it has a weird thing going on. Here's my situation:
After about a hour of running perfectly with or without load, the RPM's drop down to ~10% then the RPM's go back up to ~80% then it drops again to ~10% RPM's and the process repeats up and down though never stalling.
It seems like it is running out of fuel - which I don't think is the issue because I have replaced the fuel pump, fuel filter, have a full tank of fresh diesel, swapped the Fuel pump relay several times with new ones, checked voltage to the fuel solenoid and the issue still persists. I also loosened my fuel cap to allow more air ventilation in the tank but that too did not fix my issue. Alan over at Fischer Panda Tech Support is also stumped.
It seems like my issue is temperature related since the FP runs great for an hour or so then starts to act up.
Really not sure what to do next. Test or replace a temp sensor somewhere? Test the fuel pressure? I'm stumped...
Any ideas or suggestions?
Thanks,
Jack