Re: 56 fuel gauge not working

Posted by HH56 On 2009/1/16 19:26:24

Most likely the sender unit. To confirm, open the trunk and you will find a channel about an inch wide running the width of car between trunk floor and front of the back lower sheetmetal. Almost in front of license plate, there will be some connectors and wires going thru a hole to under car. Should be an orange wire coming out of harness and connected to another going thru the hole. That will be the gas sender lead. Disconnect and ground the part going into the harness. If key is on, the gas gauge should start to move toward full. DO NOT LEAVE GROUND CONNECTED more than a few seconds. If gauge does move, then problem is the sender and will either have to be repaired or replaced. If gauge does not move, then it's the wire, gauge or instrument regulator. The senders are prone to internal corrosion & rust, floats disintegrating so it sits on tank bottom, and any number of other failures. Unfortunately you have to drop the gas tank to remove it.