Heyblue
Well-known member
1984
Ran out of gas with fuel gauge reading just below 1/4. Bought and installed new fuel gauge sender. Tested out of tank and reads full with arm up and empty when down. Reading between one bar and no bars and the reserve light on. Noticed you have to wait for gauge to get a proper reading, i.e. the gauge is delayed from the arm position change. The tank is almost out of gas, just a few inches form bottom of tank. Put everything together and went to drive to gas station to fill up. Just after leaving the drive way noticed the gauge reading just under 1/4 level. Tried different things and discover the gauge reads correctly (one bar and reserve light on) when I turn on the ignition and wait a few minutes. I start the engine and after a few minutes the gauge reads just under 1/4 tank again. The only difference I can conclude is the battery voltage is higher with the engine running since the alternator is charging. Tried turning off the engine and then turning ignition on and the gauge goes back to one bar (since the tank is almost empty. I assume the dash cluster has a regulator to keep the voltage in it at a constant value, I thought 5VDC. I am guessing that power supply may not be working properly. Does anyone know if I am on the right track? One of the issues is I recently paid for a rebuilt dash cluster and it is still under warranty.
Ran out of gas with fuel gauge reading just below 1/4. Bought and installed new fuel gauge sender. Tested out of tank and reads full with arm up and empty when down. Reading between one bar and no bars and the reserve light on. Noticed you have to wait for gauge to get a proper reading, i.e. the gauge is delayed from the arm position change. The tank is almost out of gas, just a few inches form bottom of tank. Put everything together and went to drive to gas station to fill up. Just after leaving the drive way noticed the gauge reading just under 1/4 level. Tried different things and discover the gauge reads correctly (one bar and reserve light on) when I turn on the ignition and wait a few minutes. I start the engine and after a few minutes the gauge reads just under 1/4 tank again. The only difference I can conclude is the battery voltage is higher with the engine running since the alternator is charging. Tried turning off the engine and then turning ignition on and the gauge goes back to one bar (since the tank is almost empty. I assume the dash cluster has a regulator to keep the voltage in it at a constant value, I thought 5VDC. I am guessing that power supply may not be working properly. Does anyone know if I am on the right track? One of the issues is I recently paid for a rebuilt dash cluster and it is still under warranty.