okay so i go start my car n the gas gauge isnt working and i just put half a tank of gas...can anyone help me figure out whats wrong....

 

It is either the gage itself, the fuel sending unit (in the gas tank, accessed via removal of either the back seat or trunk liner), or the wires to each. What year Civic do you have? Find the model closest to yours and look up the testing procedures for the gage and fuel sending unit at http://ww1.honda.co.uk/car/owner/workshop.html, under the electrical, gauges section.

 

thanks ill do that tomorrow

 

Ok so i changed the fuel pump assembly and cluster, still the gas gauge isn't working can anyone please help me out....

 

By Fuel Assembly Unit you mean the sending unit? If you have replaced the gauge and the sending unit, then my friend it is the wiring that connects both. Have you changed anything before this problem happened.

 

just the fuel pump assembly before this happened