| Author | Message | ||
     1eyert |
a few weeks ago I ran out of gas apparently, I was running down the interstate and the low fuel light came on, less than 10 miles later she died. Got gas, filled up at the nearest station, but since then I get a Low Fuel System error intermittently, sometimes it stays on for a few seconds, sometimes several minutes. But it doesn't come on when the fuel is actually low, the bikes runs out of gas without going to reserve. Any ideas? Thanks in advance, Art..... | ||
| Bartone |
it happens to all of our bikes as the fuel sensor goes out. Just keep track of how many miles you get per tank and not fully rely on the low fuel sensor | ||
| Cataract2 |
Any way to replace the sensor or was this a fuel pump replacement issue? | ||
| Dhays1775 |
From everything I've read on the almighty BadWeb, it seems to be a fuel pump issue. Replacing the pump seems to fix the issue due to the thermister sliding out of range. A new pump has a new thermister on it and seems to resolve the issue for a while. That being said, the new pump and sensor will most likely drift out of range down the road and have the same issue later. I sometimes get a low fuel light as well, but that is usually due to my pushing the bike hard on the throttle. I try to keep it around 100-120 miles before I fill it up. I prefer to just keep track of my mileage rather than rely on something that isn't always right. Hope this helps. | ||
| Cataract2 |
I find it funny that my 05 XB light still comes out at the .8 fuel range. Works fine, why they changed it for the 08 is anyones guess. I just wonder if the thermistor could be replaced instead of the fuel pump. Doing a good search for them I see you can get them. Would think it could be replaced. | ||
| Albert666 |
mine does it as well as posted above just keep an eye on your mileage, you know after about 120 miles you should think about filling up | ||
| Zac4mac |
Ryan - Sure you can replace the thermistor but you still have to pull the pump ass'y. H-D won't sell you just the pump either, it's an assembly. Since resistors in parallel will have a total resistance less than the smallest resistor - Adding a trimpot in the range of the original thermistor(800-1400 Ohms per H-D) in parallel will allow you to adjust the ECM input back to spec. The thermistor still functions but at a higher resistance. You just need to bring it back in-range. I suggest tapping in to the line at the connector under the rider's seat. The 2 outside pins IIRC(A&D or 1&4). Zack (Message edited by zac4mac on November 02, 2013) | ||
| Cataract2 |
Zac, wasn't certain on the spec as I hadn't looked into how it worked. Was thinking the problem was at the pump and had to be fixed at the pump. From what I gather you are saying, the resistance that the system is expecting to see it anywhere from 800-1400 ohms. The system will drift outside of that range and then you end up getting the fuel light on earlier. So to fix that would be to splice in series a resistor to bring it back to spec. Right? | ||
| Zac4mac |
Close Ryan Parallel, not series. Fortunately, it's easier to make a remote parallel connection than a series. Resistors in series are: r1 +r2 +... rN... = rT | rT is always More than any ONE resistance. Resistors in parallel are r1r2...rN/r1+r2+...rN | rT is ALWAYS less than ANY single resistor. HTH Z | ||
| Cataract2 |
Well darn. Mine reads at ~2.1K ohms. Going to need a ~1.9 ohm resistor to bring it down to 1000 ohms resistance. | ||
| Shawns |
Pics? |
