I have a 99 honda accord automatic 6cyl with 173000 miles. When I try to start it the gas gauge begins to drop. It falls all the way past E and then want start. I have had several mechanics look at it with no fix. I have had the relay replaced and the fuel pump, I can not figure it out!

Have someone check out the:

. Fuel Gauge Sending Unit, not the fuel pump. It's located right next to the fuel pump.

. Fuel Gauge Sending Unit ground.