DIS Fuel Level

[pitzel]

Ok, so when I wired my 2.1W Cutlass Supreme DIS into my 1992, the fuel level sensor is reading '99%' when I do the DEST, RESET, 8192 thing. I have roughly 3/4 of a tank of fuel, and I am pretty sure I tapped the right wire.

 

Anyone else have this problem? With the fuel level showing 99% even though the tank isn't full?

[jeremy]

the low fuel level on my DIC doesn't work but that is because my car is OBDII

[TeeJay3800]

I have version 2.1W as well, but my DIS gives the fuel readout as "gallons used". There is no percentage readout for fuel remaining that I have ever heard of. Unless that is something the diagnostic mode tells you.....

[pitzel]

I have version 2.1W as well, but my DIS gives the fuel readout as "gallons used". There is no percentage readout for fuel remaining that I have ever heard of. Unless that is something the diagnostic mode tells you.....

 

Hit DEST, then hit RESET, then type 8192, and you will get a display showing some numbers.

 

The 2nd group of numbers, right before the character 'L', should be the fuel quantity remaining expressed as a percentage.

[TeeJay3800]

I know how to get into DIAG mode, how do you think I knew my version?

 

I never did bother to figure out what the string of numbers means so that's interesting. What do the other two numbers mean?

[pitzel]

One is dimmer intensity, and the other is fuel tank %'age.

 

I rechecked my wiring, and it all checks out okay. So I am thinking it might be a grounding issue on the harness that carries the VSS/ALDL/Fuel Tank/GND lines.

 

Where do you guys usually end up grounding these lines and is the ground 100% necessary on that particular harness? I am thinking that my DIS might be having trouble reading the fuel tank sender properly because of the effectiveness of the grounding.