Fuel Gauge - Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars
Ford Taurus | Mercury Sable | Ford Taurus SHO | 1986-2007 Forum for discussion of the Ford Taurus, Mercury Sable and Ford Taurus SHO. Covers vehicle years: 1986-2007

LinkBack Thread Tools Display Modes
post #1 of 3 (permalink) Old 10-24-07, 05:57 AM Thread Starter
Registered User
Join Date: Nov 2006
Posts: 1
Fuel Gauge

96 Taurus 3.0--
Fuel gauge reads empty....
Where should I start looking?
How can I trouble shoot the sending unit?
Is it in the tank with the pump?

shamrock is offline  
Sponsored Links
post #2 of 3 (permalink) Old 10-24-07, 08:35 AM
Join Date: Mar 2003
Location: Illinois
Posts: 703
Re: Fuel Gauge

The fuel level sender is in the tank with the pump. The entire thing can be replaced as one unit. It is called the fuel pump module.

Fuel Gauge

CAUTION: Do not remove magnetic gauge pointers; the gauge cannot be recalibrated.

The magnetic fuel gauge consists of four primary coils, one of which is wound at a 90-degree angle to the other three.
The coils form a magnetic field which varies in direction according to the variable resistance of the fuel level sensor.
A primary magnet, to which a shaft and pointer are attached, rotates to align to this primary field, resulting in pointer position.
The bobbin/coil assembly is pressed into a metal housing which has two holes for dial mounting.
The fuel level sensor (part of the fuel pump module) changes resistance according to the level of fuel in the fuel tank, which varies the current flow through the gauge. The pointer position varies proportionately to the current flow.

The pointer of the magnetic gauge remains in relatively the same position when the ignition switch is turned to OFF.

There is no adjustment, calibration or maintenance required for the fuel gauge.

Low Fuel Level Warning

Instrument Cluster Gauge Amplifier

The conventional instrument cluster contains an instrument cluster gauge amplifier which provides a delay to the fuel gauge/temperature assembly to prevent the fuel gauge pointer from fluctuating as a result of excessive movement in the fuel tank.

The instrument cluster gauge amplifier has additional circuitry to turn on a LOW FUEL warning indicator when the fuel gauge/temperature assembly shows approximately 1/16 tank of fuel remaining.

The instrument cluster gauge amplifier is designed to prove out the LOW FUEL warning indicator. The instrument cluster gauge amplifier is a small printed circuit board which latches into a pocket on the back of the instrument cluster.
The electrical connections for ignition, ground, input from fuel sender, output to fuel gauge/temperature assembly and low fuel warning output (where equipped) are made through a spring-type connector on the instrument cluster gauge amplifier to the instrument cluster printed circuit on the instrument cluster.
There are no provisions for calibration or adjustment of the instrument cluster gauge amplifier.

Unfortunately to actually test the gauge it becomes quite involved and requires an ohm meter and knowledge of wire diagrams.

PM me if you want more info.
SHOZ123 is offline  
post #3 of 3 (permalink) Old 10-26-07, 10:06 AM
Registered User
Luxury's Avatar
Join Date: Sep 2007
Posts: 15
Re: Fuel Gauge

I have the same problem in my '01 FFV, although it does read correctly occasionally. I looked at a Chilton's or Haines manual (can't remember which one) in the parts store a while back and it did have a procedure for ohming the sending unit. The resistance between certain leads should vary depending on how full the tank is. I don't recall the exact values. I've been meaning to test mine, but since I think you have to drop the tank to change the sending unit, I'm in no hurry.

Please update this post if you figure out how to test it or if you replace the sending unit.
Luxury is offline  
Sponsored Links

  Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars > Ford Cars and PAG Vehicles > Ford Taurus | Mercury Sable | Ford Taurus SHO | 1986-2007

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome