Originally Posted by DGBPokes
First day using my BlueFire adapter. It looks like it has connected, but I only get partial functionality.
1. The fuel gauge is pegged at zero
2. The Outside Temp says NA
3. Neither primary or secondary air tank shows pressure
4. Fuel Remaining isn’t functioning.
Any help would be appreciated
I know nothing about your coach or chassis, so I am only guessing. Cummins started switching from the J1708 data bus to the J1939 data bus in the '04-'05 time range. More data has been added over time. So your coach simply might not have that data on the J1939 data bus. It might be getting it for your dashboard from elsewhere.
1. Not every coach has the fuel level reading on the data bus, although it obviously has a fuel gauge on the dashboard. Mine does not have the data available. So I use a "calculated" fuel gauge. There is a setting on the Settings page to use the calculated gauge instead of the fuel level reading.
With a calculated gauge you need to tell the app when you fill the tank in order for it to work. It then records the current total fuel used reading. As you drive, the app compares the current total fuel used reading to that reading. And calculates various readings based on that difference. (And it works well, assuming you don't use fuel in your generator.)
This applies to 4. as well. If you don't start a trip and tell it when you fill the tank (and the size of your tank), it does not know how much you have left. So it can't give you a reading.
2. My data bus does not have an outside temperature reading either. Mine read NA too, so I took it off my dash. Maybe only available on newer coaches.
3. Same thing. Not all coaches will have that data available on the bus. Mine doesn't, and since Alpines don't have air brakes, I don't need it anyway. Your dashboard likely reads it from somewhere other than the data bus.
4. Covered in 1.
Again, I am only guessing from what I have read on these forums and seen on my Alpine Coach. WRV did a lot of things different, so "your mileage may vary".