gauge stuck high or low or"??????????????
how to ?
with no tools or with ?
got meter? or nothing.?
is tank full now, empty?
knowing that we can check the sender.
using an OHM meter, dmm set to resistance
unplug sender and check its ohms to ground.
infinity reading is bad sender
btw at 63ohms the sensor is at, cause the low fuel lamp to glow.
page 8e-6 in the factory manuals shows doing all this.
its in every jeep book in print. XJ jeep.
empty tank is 105 ohms
1/2 full is 33 ohms
and full is 5 ohms.
first is fuse good to cluster, do all other guages work?
then unplug C203, below near tank
see that wire,DB, (dark-blue)
measure it to with ohm meter, must read 5 to 105 ohms
if not and is why too too high .
unplug C307, and measure black to VT, (violet?)
100 to 5 homes if ok now, the ground wire there is rusty.
if not ok, the sensor is toasted.
if all this check ok.
then at c203, DB wire ground that wire,
and gauge must go to fULL key on,
if not . the DB wire is bad, or custer guage, bad,
if this test fails we do this same grounding test
at the actual gauge. if fails, gauge is bad.