Fuel Level
#1
Fuel Level
So, a while ago I ran out of fuel, the gauge was lighted, but i should of had much more than mileage than i got.
I notice today, that when i filled it today that the gauge would move up, but the light stayed on. The gauge did take a while to move to the accurate level. Any ideas on where to start? The sender is in the fuel pump, correct?
Is there an electrical component I should be looking for?
Thanks in advance.
I notice today, that when i filled it today that the gauge would move up, but the light stayed on. The gauge did take a while to move to the accurate level. Any ideas on where to start? The sender is in the fuel pump, correct?
Is there an electrical component I should be looking for?
Thanks in advance.
#2
My fuel gauge also has accuracy issues - it will only ever show about 75% full, even if the tank is topped off. I suspect there's an issue with the float, which is part of the fuel pump assembly. It will still go down and eventually illuminate the low fuel warning light, but I usually use the trip odometer to track when to fill up. I have a new fuel pump, just haven't installed it yet as this isn't a huge deal.
Here's how it works. If the fuel gauge is going up but the light is staying on, that suggests an electrical issue, whereas my issue where the fuel gauge never hits full sounds more like a mechanical issue with the float.
Here's how it works. If the fuel gauge is going up but the light is staying on, that suggests an electrical issue, whereas my issue where the fuel gauge never hits full sounds more like a mechanical issue with the float.
#3
#4
Thanks, that is very interesting. I am not sure it is worth messing with, unless this indicates a potential pump failure is imminent. I did run out of fuel a while back when the gauge showed i should of had enough to atleast get to the gas station. luckily that was the only reason it would not run. .
#5
#6
Thanks, that is very interesting. I am not sure it is worth messing with, unless this indicates a potential pump failure is imminent. I did run out of fuel a while back when the gauge showed i should of had enough to atleast get to the gas station. luckily that was the only reason it would not run. .
#7
#8
It goes to the ECU then to the gauge. The ECU reads the sending unit instantaneously, but the gauge displays the average level taken over time, this is why it takes 5-10 min to show full if you leave the ignition on while filling. If it didn't do this, the needle would be constantly bouncing around as the fuel sloshed back and forth in the tank.
#9
#10
Actually, it could be the BCM (Body Control Module)...but, it's one or the other. Personally, I've not seen an analog cluster in years.
Like mentioned by RedX, much better fuel guage stability with new method of monitoring.
Like mentioned by RedX, much better fuel guage stability with new method of monitoring.