On my 2000 Kia Sephia, the check engine light was on and I did a scan showing troubleshooting code po460:fuel gauge sending unit \ Fuel Level Sensor having a shorted or open fuel sender circuit on the fuel pump. I cleared the code and noticed the fuel gauge needle on the instrument cluster panel showing the needle at full all the way and stays there, even when I turned off the ignition. There goes the start of process of eliminations to narrow down the problem.
I removed the fuel pump carefully while turning on its side to make room for the floater to get out. I went to autozone to test the fuel gauge sending unit \ Fuel Level Sensor connectors using the voltmeter for resistance and moving the floater as well to see if it is defective. All is working fine as it should be because the fuel pump complete assembly was only 2 years old.
When I got home, I tested the fuel gauge sending unit \ Fuel Level Sensor outside the gas tank to see if there is a movement on the gas gauge needle when connected to the wire connectors while I moved the floater. Sure enough, the needle slowly moved up (the needle was down on empty at first). Gee, I thought I had it fixed, since I sprayed electronic cleaner on the four connectors. So I put the fuel pump back on inside the gas tank, tighten all the screws and put in the both fuel lines on the fuel pump. Also, put the 3 electrical connectors back on as well.
So I started the Sephia and sure enough the gas gauge needle went up to full and stay and stuck there even after I turned off the ignition. There is a circuit short somewhere or not grounded, or the connectors in the back of the instrument cluster panel. What to do next?
While this is a circuit short issue, and nothing mechanical and does not affected the running of the Sephia, it is just annoying to see the needle stuck at full and not moving anywhere. Just have to remind myself to fill up the tank every couple of weeks to make sure I don't run of gas.
I was doing some research on this issue. There is no fuse-related to the fuel gauge needle. I am somewhat baffled by this issue. Any comments, advice, feedback on this mystery issue is greatly appreciated. Thanks to all for reading this post.
I removed the fuel pump carefully while turning on its side to make room for the floater to get out. I went to autozone to test the fuel gauge sending unit \ Fuel Level Sensor connectors using the voltmeter for resistance and moving the floater as well to see if it is defective. All is working fine as it should be because the fuel pump complete assembly was only 2 years old.
When I got home, I tested the fuel gauge sending unit \ Fuel Level Sensor outside the gas tank to see if there is a movement on the gas gauge needle when connected to the wire connectors while I moved the floater. Sure enough, the needle slowly moved up (the needle was down on empty at first). Gee, I thought I had it fixed, since I sprayed electronic cleaner on the four connectors. So I put the fuel pump back on inside the gas tank, tighten all the screws and put in the both fuel lines on the fuel pump. Also, put the 3 electrical connectors back on as well.
So I started the Sephia and sure enough the gas gauge needle went up to full and stay and stuck there even after I turned off the ignition. There is a circuit short somewhere or not grounded, or the connectors in the back of the instrument cluster panel. What to do next?
While this is a circuit short issue, and nothing mechanical and does not affected the running of the Sephia, it is just annoying to see the needle stuck at full and not moving anywhere. Just have to remind myself to fill up the tank every couple of weeks to make sure I don't run of gas.
I was doing some research on this issue. There is no fuse-related to the fuel gauge needle. I am somewhat baffled by this issue. Any comments, advice, feedback on this mystery issue is greatly appreciated. Thanks to all for reading this post.