LB7: Disable Low Fuel Light

jonathancasey19

jonathancasey19

yepppp
Sep 10, 2008
1,072
0
36
Morehead City, North Carolina
Low fuel light stays on. Very annoying. Probably bad sending unit. Don't care to spend $$ to fix. How can I disable the Low Fuel DIC light? I've tried disconnecting the sending unit wire harness. There must be a way to delete the input signal that illuminates the Low Fuel light.
 
JoshH

JoshH

Daggum farm truck
Staff member
Vendor/Sponsor
Feb 14, 2007
13,712
773
113
Texas!!!
In the section that lets you scale the sending unit to calibrate the gauge, just enter 26 in every cell. It will always show you have a full tank, but the light will be off. It wouldn't be any worse than always showing you are empty.
 
DAVe3283

DAVe3283

Heavy & Slow
Sep 3, 2009
3,727
296
83
Boise, ID, USA
I love abusing EFI for this kind of thing. I have a crack in the pickup tube so anything below 1/4 tank sucks air, and kills the truck. I just rescaled the gauge to read so 5 gallons is empty. You wouldn't know my gauge wasn't stock, except when you fill up with the light on and only put in 19 gallons... :roflmao:
 
paint94979

paint94979

Beer Nazi
Sep 18, 2006
11,715
8
38
37
DAVe3283 said:
I love abusing EFI for this kind of thing. I have a crack in the pickup tube so anything below 1/4 tank sucks air, and kills the truck. I just rescaled the gauge to read so 5 gallons is empty. You wouldn't know my gauge wasn't stock, except when you fill up with the light on and only put in 19 gallons... :roflmao:
Click to expand...

Haha thats funny right there
 
chevyburnout1

chevyburnout1

Fixing it till it breaks
Aug 25, 2008
2,368
1
38
Berthoud, CO
If the sending unit is causing the circuit to go open it'll probably be setting a code, something around a p0463 I believe. Try shutting off that code and see if that fixes it.
 
x MadMAX DIESEL

x MadMAX DIESEL

<<<< No Horsepower
Dec 30, 2008
7,535
1
38
34
Lexington, Ky
DAVe3283 said:
I love abusing EFI for this kind of thing. I have a crack in the pickup tube so anything below 1/4 tank sucks air, and kills the truck. I just rescaled the gauge to read so 5 gallons is empty. You wouldn't know my gauge wasn't stock, except when you fill up with the light on and only put in 19 gallons... :roflmao:
Click to expand...

You sure its not supposed to be like that? Mine goes on with 6 gallons left on a 26 gal tank

Sent from my PC36100 using Tapatalk 2
 
DAVe3283

DAVe3283

Heavy & Slow
Sep 3, 2009
3,727
296
83
Boise, ID, USA
x MadMAX DIESEL said:
You sure its not supposed to be like that? Mine goes on with 6 gallons left on a 26 gal tank

Sent from my PC36100 using Tapatalk 2
Click to expand...
It used to die with 1/4 to 1/8 on the gauge, usually right as the light came on (for the irony?). Now, I can run it until range reads "LOW" and the needle is below the E and it won't die. If I fill it up the moment the light first comes on, I put on 15 gallons or so.

Sent from my Galaxy Nexus using Tapatalk 2
 
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