SOURCE: when car idles gas gauge goes down to empty
Your code is PO462. Isuzus made 99-01 with bad fuel level sensors as well as bad fuel pumps located inside your gas tank. You can just replace the sensor but i advice you to replace the whole "fuel pump assembly" to prevent another problem. At a shop this is a costly job they will charge 500$. But if you have faith you can do it your self..it is fairly easy to replace if you have a friend to help even better. but will need to erase the code before or after doing the job to prevent the same symptoms. Buy a "Fuel pump Assembly kit" with and a gasket (around190$).Remember always do a job carefully to prevent braking anything. Raise your car, locate your gas tank unbolt the 4 bolts holding it, disconnect any sensors, there should be 2 other bolts holding the tank once down, you can see the assembly with hoses disconnect too. and pull the assembly out itwill be tight, now replace with new gasket and assembly kit press down firmly till it locks in. now connect everything the way you took out. Its actually easy...here is a pic of the whole assembly kit.....GOOD LUCK
SOURCE: po463 fuel level sensor circuit voltage too high.
fuel level sensor is part of the fule pump assembly. code is telling you sensor is malfuctioning. do gauges work? if yes i would leave problem alone till you need a fuel pump
Testimonial: "Thank you. I replaced the sensor and apparently this is still a problem. "
SOURCE: Can someone help with this
It means there is a problem in the fuel sending unit circuit. The PCM uses a 5v reference on this system to calculate fuel level. There is either a problem in the sending unit or related wires.
Testimonial: "Thanks . very helpful "
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