hey guys hows it going iam in need of help i have a 2000 civic si and i noticed my gas gauge is stuck on full and my gas low light came on so i started doing research on the car, come to find out i was almost out of gas so i bought a new fuel tank sending unit and replaced it and still stuck on full i then disconnected the connector from the fuel tank sending unit and i tested the black and yellow/black wire with voltage tester and iam getting 11.2v to 11.8 volts at the connector the paper i had got with the brand new fuel sending unit says there should be 5 to 8 volts there so i have no clue where to go from here????

 

If you unplug the sending unit and then turn the key to ON(II), does the needle on the fuel gauge slowly drop toward E?

 

No it doesn't I unpluged it and still nothing what else could it be I also tested the connecter on the fuel sending unit and there is a lot more voltage there Then paper says there should be . Paper says there should be 5 to 8 volts . I have 11,1 volts to 11,8 volts . Iam so annoyed all I want is it too work again lol

 

Voltage read at the sending unit connector on the Yel/Blk wire comes from the fuel gauge, so unusually high voltage suggests that the fuel gauge itself or the cluster is bad. Before you replace either, however, test for a short to body ground in the Yel/Blk wire from the sender unit connector. If none is found, replace the gas gauge or the cluster.

 

Ok thanks gonna take a look today