Fuel gauge stuck on full - 2002 Kia Sportage

Hi Hussein. My name is Tim Dorton. The fuel level senor in the gas tank is like a floating water level switch, except it controls a small voltage level. This voltage is sent to a computer which sends a signal to a module on the gauge cluster. If the gauge level is stuck on low, it could be the level sensor, no voltage,wiring,computer,or gauge cluster. If stuck between low and full, most likely the gauge cluster. If stuck on full, the level sensor may have lost it's ground, computer , gauge cluster. One way to diagnose is to unplug the level sensor at the tank, most imports have a hatch under the rear seats.Then ground the signal wire, the one that has niether power or ground, and see if the gauge goes to full.

Hi,it must be that the gauge or sender unit are faulty,check sender unit first.

guage stuck in the tank or loss of ground/power to sender..

check all wirering

In most cases a bad or broken ground at the sensor connection at the fuel tank.

it is probbally the fuel pump in the gas tank. It has a float like the one in your toilet and a sensor attached to it to tell you how much gas you have.

Gm cars are common for having defective fuel tank sending units in the tank. Yours likely needs replaced.

replace fuel pump/Fuel gage sending unit (All in one) also wire pigtail to asmbly Pontiac Montana's are prone to wire falures and shorts $300+ if done in drive way alot more if you have a shop do it!
P.S. REPLACE ASMBLY WITH AS LITTLE FUEL IN TANK AS YOU CAN...!

it could be that either you have a stuck float on the fuel pump in the tank(most likely problem) or your gauge is faulty. replace the faulty part...........pleas rate this

need to replace the sending unit