K11 Owners Group

essextykeman · Posted: Mon Nov 05, 2012 7:50 pm Post subject: FUEL TANK-GAUGE PROBLEM

Hello,, i have a problem with the tank-gauge on my k1100lt,,,when the tank is full it works fine until the needle on the gauge gets down to half a tank it goes up and down erratically,,,any ideas please ?????
_________________
99 K1100LT
89 K100LT
06 K1200GT SE
01 KAWASAKI ER500
11 BANDIT 650

kioolt · Posted: Mon Nov 05, 2012 9:47 pm Post subject:

Sounds like the sending unit in the tank is bad. My K100LT gauge did a similar thing a few years ago. It would read good at the upper end and lower end but in the middle range it would show empty. Replacing the sending unit fixed the problem.
_________________
2004 R1150RT 186,800 miles
1991 K100LT 128,700 miles
1982 R100RT 106,900 miles
Total 422,400 BMW miles
AMA,BMWRA,BMWMOA
The cheapest thing on a BMW is the nut that connects the handlebars to the seat.

essextykeman · Posted: Tue Nov 06, 2012 4:58 am Post subject: Re: FUEL TANK-GAUGE PROBLEM

Tim (Midland Section) · Posted: Tue Nov 06, 2012 4:28 pm Post subject:

I had a similar problem on one of mine. Eventually traced when the fuel gauge reading changed when the lights were on. Cleaned the earth (ground) to the meter.
Consider also the 4 pin connector to the tank which has a history (on here anyway) of intermittancy.
IMHO Do the cheapest & easiest checks first, before a serious extraction of the wallet (billfold).

The sender is just a variable resistor, should be easily measurable with an ohmmeter & a coathanger fashioned to lift or push the float down through the filler, best done with a nearly empty tank.
HTH
_________________
Regards Tim,

Grey haired riders don't get that way by pure luck
1996 Guzzi Cali3 LAPD
1972 750 Commando
G6HRN
#485