Low Fuel Light

[Rhys Webb]

I made use of this light quite a bit when gas was $4 a gallon.

$4 per gallon. That is equivelant to $1/litre I would be over the moon with fuel that price. I am lucky to pay less than $1.40/Litre ($5 per gallon)

 

[rmblaire]

$4 per gallon. That is equivelant to $1/litre I would be over the moon with fuel that price. I am lucky to pay less than $1.40/Litre ($5 per gallon)

Filled up this morning thinking about the fuel light. Took 21 Gal (at $2.65 so about $0.70/Litre) but no fuel light on. Time to pack a gas can and drive until it runs out!

 

[Rhys Webb]

Filled up this morning thinking about the fuel light. Took 21 Gal (at $2.65 so about $0.70/Litre) but no fuel light on. Time to pack a gas can and drive until it runs out!

I actually think i hate you all -.-

 

[Bella1992]

I just filled up today, the light was on and it took 20 gallons

 

[lp2k]

What if the needle is pegging below the empty mark and still no light ?

The light works but I don't know if I should follow the gauge or wait for the light

 

[Blade 80LC]

What if the needle is pegging below the empty mark and still no light ?

The light works but I don't know if I should follow the gauge or wait for the light

I usually fill when my gauge gets between 1/2 and 1/4 tank. My light finally came on when I was trying to empty my tank. The gauge was a bit below the "E" line. The cruiser took 21 gallons. Prior to the "DYK" thread, I assumed I had a 19 - 20 gallon tank, and had no idea there was a low fuel light.

 

[lp2k]

I agree, I actually never try to run below half a tank.

I'm not a mechanic by no means.
My cousin was a fan of 82-92 trans am. Those things had a true PITA way to remove the fuel pump. IIRC, the pump was using the gasoline as a way to keep itself cool.


So to avoid that drama, I keep the tank half or full when I can to keep the pump cool.


Not sure what everyone point of view is but said I would share. I hope the land cruisers don't use that type of ideology.

 

[Onefastrx7turbo]

Most, if not all, electrical fuel pumps are cooled by fuel.

 

[Grimmjow]

With my 91' it came on at 5 gallons, fast forward to my 94' where it comes on at 2... Fount that out the hard way.

 

[wearsabrowncoat]

Light started flickering and then turned solid about 5 miles later. Fuel hand below empty line as you can see but only took 20.5 gallons.

 

[ralphy1997]

5 Gallons. This experiment was performed and confirmed by CDan-man and the Boy Onur when they where still fighting crime together.

https://forum.ih8mud.com/threads/gas-tank.366711/#post-5329058

 

[orttauq]

Does anyone know how to test the light (without the risk of a long walk to get gas)?

Can you jump the wires at the top of the tank? Not too keen to tear apart the dash going after the bulb if the issue is the sender.

 

[alltel05]

Just my two cents... Of you do have to pull your dash to do the bulb go LED. Just make sure you don't do the "EMPTY" bulb in LED. I didn't read enough on the forums and did my whole dash in LED and the fuel empty light stayed lit the whole time. Had to pull the dash out again. Sometimes those bulbs in the dash become lose or the contacts get oxidized. Just popping them out and back again fixes the issue. The only PITA is the stupid Odometer cable. I have big hands and sausage fingers. LOL.

 

[orttauq]

Already did the LED conversion but did not convert that bulb.

 

[Tools R Us]

Most, if not all, electrical fuel pumps are cooled by fuel.

True, by the fuel flowing through them, do not need to be immersed. I don't recall ever seeing a dead pump on an '80.

 

[aae42]

light tends to gradually light up and turn off when changing pitch before it's on full on my 96...

pretty much drive it until i see the light every time... on a trip i'll fuel up when convenient, around town it's when i see the light...

 

[TrickyT]

Full-Empty gauge sender is a separate circuit from the empty light sensor, providing a redundant system to say "hey dude, put some petrol in the tank."

... There is a way to modify when the light comes on. Not sure it is worth the work...

Why would you want to modify something that works as well as the red fuel light? So it comes on at 3 gals? 1 gal? Whats the point? Red light = 5 gals = 5*12=60 miles before you're dead at the side of the road.

 

[LS1FJ40]

Why would you want to modify something that works as well as the red fuel light? So it comes on at 3 gals? 1 gal? Whats the point? Red light = 5 gals = 5*12=60 miles before you're dead at the side of the road.

I wouldn't want to but I could see someone wanting it to be 7-8 gallons. When I was driving back from LA there were times I drove over 60 miles between fuel stops.

 

[orttauq]

So no ideas how to test circuit without taking the cluster out? Or to test the light sender? Gauge was below E today and it took 21.5 gals so I know the light circuit is broken.

 

[Tools R Us]

So no ideas how to test circuit without taking the cluster out? Or to test the light sender? Gauge was below E today and it took 21.5 gals so I know the light circuit is broken.

Sure, pull the floor plate, short the wire to ground, the light should come on.