Someone please help because I am so confused. So my fuel gauge always reads slightly below the E symbol. I figured my sending unit was bad so I went to the junk yard and pulled the sending unit out of a 94 civic sedan. I have a 95 civic coupe but I figured they'd be the same. I plugged the connector to the sending unit BEFORE putting it in the tank, I used my finger to put it in the full position as I watched the gauge on the cluster and it worked. Though everytime I put it into the tank it reads below E again. Even those my tank is full of gas....suggestions????

 

Check whether something inside the gas tank is impeding movement of the float arm.

 

I know the arm is free to move because I can wiggle it up and down to get the gauge to go up and down but whenever I start to lock it in place by rotating the twist lock, it drops below E

 

Outside of the tank, hold the float in full position while wiggling the wires. Any effect on gauge reading?

 

^^ Yes sounds more like an intermittent wiring issue than an issue with the sender unit.

 

What do I do to fix that ???