Notices
1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks Discuss the Early Eighties Bullnose Ford Truck

Fuel Gauge sending unit

Thread Tools
 
Search this Thread
 
Old Nov 4, 2004 | 06:09 PM
  #1  
DT 466Man's Avatar
DT 466Man
Thread Starter
|
Posting Guru
Joined: Jul 2003
Posts: 2,454
Likes: 1
From: Adams TN
Fuel Gauge sending unit

My truck has a single 19gal tank and when between full and 1/2 tank it works fine.
after just before half tank it drops off to empty
what causes this?
 
Reply
Old Nov 4, 2004 | 06:48 PM
  #2  
locknkey's Avatar
locknkey
Posting Guru
Joined: Sep 2003
Posts: 1,002
Likes: 1
From: Right Next to U
The fuel gage in the tank is defected or has a broken wire on the sending unit. It will have to be replaced are repaired (tank will have to be drained and the unit removed)
 
Reply
Old Nov 4, 2004 | 07:12 PM
  #3  
DT 466Man's Avatar
DT 466Man
Thread Starter
|
Posting Guru
Joined: Jul 2003
Posts: 2,454
Likes: 1
From: Adams TN
ok, so it is just the electrical do thingy on the float right?
shouldn't be difficult.
i guess me and my brother will have to drop the tank
thanks
 
Reply
Old Nov 4, 2004 | 07:20 PM
  #4  
locknkey's Avatar
locknkey
Posting Guru
Joined: Sep 2003
Posts: 1,002
Likes: 1
From: Right Next to U
Yep...make sure its pretty close to empty and you disconnect the fuel lines and fuel filler tube, they can be almost as hard to remove and put back in as the tank is heavy to lift up with the two straps, get a good jack and blocks to help lift it up if its too heavy for you. A helper that doesn't smoke is the next thing to worry about....
 
Reply
Old Nov 4, 2004 | 07:24 PM
  #5  
DT 466Man's Avatar
DT 466Man
Thread Starter
|
Posting Guru
Joined: Jul 2003
Posts: 2,454
Likes: 1
From: Adams TN
yea they are harder to get back in than to get out
my dad and i had to change the fuel pump on my mom's 98' suburban in tank 42gal just gassed up on the side of the road had a good floor jack and a set of wrenches i'll be sure to drain this one
not to worries about not being able to wrassle it back in place i'm a pretty good sized 16 year old 6'3 260
thanks for the advise
 
Reply
Old Nov 4, 2004 | 07:27 PM
  #6  
locknkey's Avatar
locknkey
Posting Guru
Joined: Sep 2003
Posts: 1,002
Likes: 1
From: Right Next to U
The sending unit is usually on top an can be hard to remove, the unit has rubber type seal/gasket (some are not make out of rubber but looks like it) The ring notches it on and it will be removed in a clockwise rotational angle. it will lift out after the ring has been taken off, be careful lifting it out as you don't want to drop any of the old material that will come off the old sending unit back into the tank, lower the unit in and before you do, apply some clean lube on the gasket to help it seal when you put the ring back on. Also look inside the tank to make sure there isn't any dirt...rust...and water still in the bottom...makes things work nicer when you KNOW you done it right.
 
Reply
Old Nov 6, 2004 | 04:17 PM
  #7  
DT 466Man's Avatar
DT 466Man
Thread Starter
|
Posting Guru
Joined: Jul 2003
Posts: 2,454
Likes: 1
From: Adams TN
thanks for the tips
 
Reply
Old Nov 9, 2004 | 03:46 PM
  #8  
bnb29's Avatar
bnb29
Freshman User
Joined: Nov 2004
Posts: 36
Likes: 0
If your not up to replacing the sender, you might try what I tried. Remove the sender, remove black plastic cover very carefully. You should see a small metal finger that wipes across a circuit board as the float moves. It should be apparent the finger has worn an arc across the circuit board. Carefully move the tip of the finger to a new position on the board, just under the worn arc. Keep in mind the finger has to mantain contact with the board throught it's entire sweep. Hook up an ohm meter and move the float arm slowly in both directions. Make sure the readings are smooth and consistent.
 
Reply
FTE Stories

Ford Trucks for Ford Truck Enthusiasts

story-0

10 Things Every Truck Owner NEEDS (2026 Edition)

 Michael S. Palmer
story-1

Rezvani's Latest Post-Apocalytic Monster Is a Ford F-150 Raptor Underneath

 Verdad Gallardo
story-2

Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer

 Joe Kucinski
story-3

2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)

 Brett Foote
story-4

Top 10 Ford Truck Tragedies

 Joe Kucinski
story-5

AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make

 Brett Foote
story-6

Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!

 Michael S. Palmer
story-7

Ford's 2001 Explorer Sportsman Concept Looks For a New Home

 Verdad Gallardo
story-8

10 Best Ford Truck Engines We Miss the Most!

 Joe Kucinski
story-9

2026 Shelby F-150 Off-Road: Better Than a Raptor R?

 Brett Foote
Old Nov 9, 2004 | 05:56 PM
  #9  
bremen242's Avatar
bremen242
Logistics Pro
20 Year Member
Joined: Jan 2002
Posts: 3,739
Likes: 3
From: GANS
I bought a new one b/c mine was even too worn to do what bnb29 said. $100 from ford.. do it right, and replace it in 20 more years, not 2
 
Reply
Old Nov 10, 2004 | 06:46 PM
  #10  
bnb29's Avatar
bnb29
Freshman User
Joined: Nov 2004
Posts: 36
Likes: 0
I'll let you know when mine quits but don't hold your breath.
 
Reply
Old Nov 10, 2004 | 09:11 PM
  #11  
bremen242's Avatar
bremen242
Logistics Pro
20 Year Member
Joined: Jan 2002
Posts: 3,739
Likes: 3
From: GANS
Originally Posted by bnb29
I'll let you know when mine quits but don't hold your breath.
i'd be curious. mine was totally destroyed and wouldn't track even when I moved it over.. I am glad you are having better luck!
 
Reply
Old Nov 11, 2004 | 01:37 AM
  #12  
Birdhunter1's Avatar
Birdhunter1
Cargo Master
20 Year Member
Photogenic
Joined: Aug 2004
Posts: 2,542
Likes: 22
From: Murphysboro, IL
Originally Posted by DT 466Man
thanks for the tips
I didn't replace a sending unit this way but I think it would be alot easier to do this way. When I repainted my 84 several years ago I had to take the bed off, taking the bed off was very easy; unhook filler neck right behind the bed, unhook wiring to taliights, and take out 6 or 8 bolts. With the bed off I believe the sending unit is right htere in wide open space with lots of room to work. Two guys can move the bed back far enough to get your work done and then put the bed back in place. If youdon't have alot of room to work under a truck this may be easier. To me I would rather work down on something than work overhead laying underneath.
 
Reply
Old Nov 11, 2004 | 01:22 PM
  #13  
reamer's Avatar
reamer
Logistics Pro
20 Year Member
Photogenic
Photoriffic
Shutterbug
Joined: Jan 2001
Posts: 3,789
Likes: 26
From: Connecticut
The easiest way to replace the sender is to remove the bed, not drop the tank.

thats what I did. You wont spill any gas and it is much faster working standing up than on your back.
 
Reply
Old Nov 11, 2004 | 06:07 PM
  #14  
DT 466Man's Avatar
DT 466Man
Thread Starter
|
Posting Guru
Joined: Jul 2003
Posts: 2,454
Likes: 1
From: Adams TN
thanks much
 
Reply
Old Feb 1, 2006 | 10:51 AM
  #15  
bnb29's Avatar
bnb29
Freshman User
Joined: Nov 2004
Posts: 36
Likes: 0
yep my sender is still working
 
Reply




All times are GMT -5. The time now is 07:07 AM.

story-0
10 Things Every Truck Owner NEEDS (2026 Edition)

Slideshow: the best gifts for dads & grads

By Michael S. Palmer | 2026-06-02 21:45:57


VIEW MORE
story-1
Rezvani's Latest Post-Apocalytic Monster Is a Ford F-150 Raptor Underneath

Slideshow: Called the Fortress, the 850-horsepower pickup combines Raptor underpinnings with military-inspired features, survival equipment, and a starting price of $285,000.

By Verdad Gallardo | 2026-05-30 18:33:59


VIEW MORE
story-2
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer

Slideshow: 10 most expensive Ford trucks ever sold on Bring a Trailer.

By Joe Kucinski | 2026-05-27 16:24:34


VIEW MORE
story-3
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)

Here's everything that has changed for the latest model year.

By Brett Foote | 2026-05-27 16:17:28


VIEW MORE
story-4
Top 10 Ford Truck Tragedies

Slideshow: Top 10 Ford truck tragedies.

By Joe Kucinski | 2026-05-18 19:34:33


VIEW MORE
story-5
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make

And it might be even better than that.

By Brett Foote | 2026-05-18 19:26:42


VIEW MORE
story-6
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!

Slideshow: Does lowering an F-150 Lobo RUIN the ride quality?

By Michael S. Palmer | 2026-05-18 19:20:37


VIEW MORE
story-7
Ford's 2001 Explorer Sportsman Concept Looks For a New Home

Slideshow: Ford's bizarre fishing-themed Explorer concept has resurfaced after spending decades largely forgotten.

By Verdad Gallardo | 2026-05-12 18:07:46


VIEW MORE
story-8
10 Best Ford Truck Engines We Miss the Most!

Slideshow: The 10 best Ford truck engines we miss the most.

By Joe Kucinski | 2026-05-12 13:09:47


VIEW MORE
story-9
2026 Shelby F-150 Off-Road: Better Than a Raptor R?

Slideshow: first look at the 810 hp 2026 Shelby F-150 Off-Road!

By Brett Foote | 2026-05-12 12:50:07


VIEW MORE