anyone know why the fuel gauge would be so eratic? goes from full to empty to half to empty to full and on and on. only seems to be when half full or full. it moves around like its possesed. this is on a 92 FLHTC.

 

Wayne, I don't care what year bike you have, every fuel gauge I've seen on touring bikes is crap. It's 100% accurate when the tank is full, but after that, it's anyone's guess. I just use the odometer and don't worry about it. Maybe some day HD will find a better fuel gauge, but I'd probably just use the odometer anyway.

 

Agreed...When I hit 175 miles on the trip meter I start looking for a station to fill up at. I never depend on the gauge as it is not that accurate.

 

+1...you and I have the same method! The gauges are not really close after 1/2 tank. use that odometer and you usually will never go wrong!

Ride Safe, Mike

 

++1...I find myself automatically looking for a gas station at 150 miles even though I believe I could get 180 miles out of the tank.

Not interested in trying to find out

 

My O1 Ultra did the same thing. The fuel gauge used on the older bikes is fast acting. I replaced the fuel gauge with one from a 2004 EG which is a slow acting gauge. Because the needle moves slowly it takes more time to react to things like fuel slosing around in the tank due to braking or accelerating. The new gaugeis almost dead steady. BUT, it still just as inaccurate, it probably has a little over a gallon when the gauge reads 1/2 tank.

Re'

 

Odometer to measure my tank of gas every time. Fuel gauge is a nice thought, but I don't trust it.

 

thanx for the input. odometer it is.