1030
« on: June 13, 2006, 09:25:30 PM »
Nope, I'm backwards, high resistance (open circuit) means the gauge will read above full. Sender produces 90 ohms full, 0 ohms empty. But if your getting 8 v at the connector in the trunk, then the wire isn't open circuited between the gauge and that connector, it has to be open circuited between the connector and the sender, or the sender and ground. Are you reading 0 ohms (short) or infinite resistance (open) when you check from the connector to the sender? If your reading 0 ohms the guage should read empty.
When you disconnect the gauge, stick a wire into the connectro and then ground the other end. If the gauge goes to empty then the gauge and all the wiring between the guage and the connector is fine. Check the ground wire on the sender (it doesn't ground to the tank). Just about dead center at the front edge of the tank there is a black wire that comes from the sender that is attached to the sheetmetal under the trunk with a screw. That is the sender ground wire, make sure its there before you think about pulling the tank, especially if you have had work done in that area recently, like a muffler replacement, or brakeline work.