Fuel Gauge Question

[Sonicfrog]

So we all know that a grounding problem will cause the temp gauge on a digi dash to give false readings. I am curious, would the bad ground also cause false readings on the fuel gauge too?? I ask because I have been dissapointed by the mpg on Murphy the 87 T-Wag (19 mpg), but wonder if there is more gas in the tank than the gauge says when it's indicating I'm running on empy. And the trip computer has definitely not given accurate readings.

 

I am hoping to do the digi to analogue swap this wekend. Is their any way to put a resistor on the fuel sensor leads to make the digital calibrated sensor work with the analogue dash, or am I just resigned to swapping the sensor?

 

I am going to swap the 3AT to 5 spd D/R later this spring. I was planning to change the fuel sensor at that time. In the mean time, I will fill the tank and keep an eye on the trip odometer. When I've traveled about 200 mi. or so I will refill the tank.

[rllywgn]

i have noticed some inconsistencies also... the movement on the digi fuel gauge doesnt seem linear at all.. i'll get 110miles out of the top 1/4 tank and 120 on the rest of the tank by what the gauge says. I'm almost positive i need a new O2 sensor but, how much is left when the gauge has 1-2 bars or when it shows empty?i think im around 19-20mpg on a ft4wd sedan..

 

 

rllywgn