I have a problem with my 2 door Toyota rav4 2002 fuel gauge. it reads empty when in fact it is partly full. When filled up at pumps it then reads only half full. What can I do to fix this.
Defective fuel sending unit.
Your fuel sending unit is not giving the correct reading to your gauge
bad fuel pump it could also mean that the fule ammount sencor is out.good luck.
i would recommend getting gas when that happens. perhaps take it to the mechanic to fix the gauge
Simple check is to ground the fuel sending wire at the fuel tank.If the gauge reads FULL then it is a bad fuel sending unit and you need to drop the fuel tank to replace it.If the gauge reads empty when you ground the wiring then it means you have a bad fuel gauge.I would lean strongly towards the sending unit be bad my 87 the gauge started reading about 1/4 tank less before it failed.
In the gas tank
Either the gauge is broken or the sender is broken.
sounds like you have a bad ground wire on frame by the fuel tank. small black wire coming from the fuel tank and screwed to the frame.
fuel sending unit broken wire or gauge is bad
Float could be stuck in the tank or the ground wire on the tank is broke.
Sounds like the transfer pump in the rear tank is bad and you are running out of fuel in the front tank. The fuel gauge reads both tanks and gives you an average between the two. So, if the front tank is empty and the rear tank is full the gauge will read aprox a half tank.