F250 Fuel gauge

Asked by May 01, 2013 at 02:20 PM about the 1997 Ford F-250 2 Dr XL 4WD Extended Cab LB HD

Question type: Maintenance & Repair

I have a 1997 Ford F250 Heavy Duty with a 7.3L,  it has dual gas tanks.  When i flip the switch to tank one, the gauge drops to empty.  There is diesel in the tank and it continues to run fine.  Any ideas on what is causing the gauge to drop to empty?

6 Answers

26,335

the sending unit is bad in one tank. either that or wires to it.

3 out of 3 people think this is helpful.
93,585

It could also be an open connection at the switch. The sending unit provides the ground for the gauge. The better the ground, the fuller the gauge. A empty gauge indication would be no needle movement due to no ground.

1 out of 1 people think this is helpful.
86,545

Agree it sounds like the sender, it is possible that the float has came off the sender and sits on the bottom so you get an empty reading. I believe that this year of Ford if you have an open circuit in the fuel gauge system the gauge goes past the full mark.

1 out of 1 people think this is helpful.
26,335

your right tennisshoes. Its susposed to read 145ohms when full and 22.5ohms when empty. An open condition would make it read over full. the signal is shorted to ground somewhere. you could unplug the sender on the affected tank and if it reads full then you know its the sender. if it doesnt change you have a wire shorted to ground.

2 out of 2 people think this is helpful.
1,070

the switching valve under the truck also switches the gauge circuit. lots of salt and water down there check for corrosion in the elec. connections. it may require a new valve

155

I just replaced my rear tank and fuel pump on my 89 F250 with 351W. when the tank is full it reads normal till 3/8 of tank left and the gauge will start to rise back up to full.

2 out of 2 people think this is helpful.

Your Answer

Add photo

Related Questions

  • 1997 Ford F250 gas with dual tanks 1 answer

    I have a 97 F250 big block gas engine with two tanks. It will not run off the front tank but when you move the switch on the dash the gauge works fine. Also, it seems like fuel is being pushed from th...

    1997 Ford F-250 2 Dr XL Extended Cab SB HD

    -

    Maintenance & Repair

  • 1996 F250 erratic temp gauge 2 answers

    new water pump,thermostat,thermo sensor,rad cap. Dash gauge cold to hot back to cold constantly. New coolant filled. Bad water pump?

    1996 Ford F-250 4 Dr XL Crew Cab LB HD

    -

    Maintenance & Repair

  • 1998 F250 shakes uncontrollably.!!! 1 answer

    My truck shakes so severely starting at 30 and beyond. If I try to gently throttle it past 30 at that point and from then on it will jar you to death, yet if I were to get down on the throttle the...

    1998 Ford F-250 3 Dr XLT Extended Cab SB

    -

    Maintenance & Repair

  • 1996 F250. Pulled my leaking rear fuel tank to replace it with a new one? Won't run on just one tank? 5 answers

    While waiting on new tank assembly some folks told me that I could drive it around with the front tank with zero problems. 1. I DID unhooked Batt cables before I started to remove old tank. 2. I DID ...

    1996 Ford F-250 2 Dr XL Standard Cab LB

    -

    Maintenance & Repair

  • how do i determine if my 1978 ford f250 truck is a "snofighter"? what are some sure details? 5 answers

    how do i determine if my 1978 ford f250 truck is a "snofighter"? what are some sure details?

    1978 Ford F-250

    -

    General

F-250

Looking for a Used F-250 in your area?

CarGurus has 520 nationwide F-250 listings starting at $3,500.

ZIP:

Search Ford F-250 Questions

Ford F-250 Experts

#1 tennisshoes
tennisshoes
Reputation 580
#2 FordNut
FordNut
Reputation 510
#3 dandyoun
dandyoun
Reputation 340
View All

Related Models For Sale

Used Ford F-150
2,878 Great Deals out of 212,656 listings starting at $1,000
Used Ford F-350
340 listings starting at $1,500
Used Dodge Ram 2500
168 Great Deals out of 5,533 listings starting at $2,500
Used Dodge Ram 1500
537 Great Deals out of 12,998 listings starting at $2,199
Used GMC Sierra 1500
930 Great Deals out of 62,271 listings starting at $1,395
Used GMC Sierra 2500
200 listings starting at $5,995
Used Ford Mustang
398 Great Deals out of 44,403 listings starting at $1,000