Question about 2001 Ford F350 Super Duty SuperCab

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Fuel Gauge not working

I have a 2003 F350, the Fuel gauge Dropped below E and Low Fuel Light is On. I know there is 25 Gal of Fuel in tank. If I unhook Batt, then Wait 15 min Gauge will go to full for 2 min, then fall below E again. Does this Truck Have a Anti Slosh Module?"

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6 Suggested Answers

Anonymous

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Posted on Jan 02, 2017

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tripletauto

TripleTauto

  • 1450 Answers

SOURCE: fuel gauge stuck on full

need to replace the sending unit

Posted on Sep 19, 2008

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Anonymous

  • 77 Answers

SOURCE: 2003 F350 Intrument Cluster

If everything keeps going like that then it sounds like its a problem with the onboard computer. The computer controls all the guages and would explain why they all fail at the same time.

Posted on Oct 20, 2008

rblack_51

  • 3 Answers

SOURCE: fuel guage quit

the sender unit in the fuel tank has given up the ghost ,replace unit

Posted on Dec 02, 2008

Anonymous

  • 405 Answers

SOURCE: fuel gauge not working on 2005 ford mustang

Sending unit is in gas tank. usually as an assembly with the electric pump. These aren't cheap either, If you know a mechanic you can trust ask him how much to install a new one, I can get them wholesale for less than two hundred dollars, but of course retail probably more like 250.00 Hope this helps you!

Posted on Dec 26, 2008

csmock132

Clint Smock

  • 4669 Answers

SOURCE: 2000 Taurus fuel gauge does not work. It goes

Is this a flex fuel taurus

Posted on Apr 03, 2010

Testimonial: "I had no idea the module existed! I will give it a try. Thank You! Ken"

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1997 Cadillac Eldorado fuel gauge not reading fuel level correctly


Did you test before replacing ? Do you know how it work's ?

Fuel Level
The body control module (PZM) monitors the fuel level sender input in order to determine the current fuel level. The PZM filters the input and sends a message via the Class 2 serial data line. The IPC receives this message and displays the current fuel level. The fuel level is sent from the PZM to the IPC at changes of 0.5 L (0.02 gal) or on the request of the IPC, with a resolution of 0.04 L (0.01 gal).
• For the digital IPC, when the fuel level is above 18.5 gal, the IPC displays an F. For readings between 18.5-2.5 gal, whole gallon/liter numbers are displayed. When the fuel level reaches 3.0 gal the message FUEL LEVEL LOW is displayed on the driver message center. When the fuel level reaches 2.5 gal, the IPC displays an E. When the fuel level is 1.2 gal or below the IPC displays a flashing E.
• For the analog IPC, when the fuel level is above 18.5 gal, the fuel gauge pointer is on F. When the fuel level is below 2.5 gal the fuel gauge pointer moves to E. When the fuel level is below 3.0 gal the IPC displays a FUEL LEVEL LOW message.
If the updates are not received or a communication error is detected, the IPC performs the following actions:
• For the digital IPC, the fuel gauge is dashed.
• For the analog IPC, the fuel gauge pointer moves to E.

Fuel Gage Inaccurate or Inoperative
Circuit Description
The IPC monitors the fuel level sent by the PZM through the class 2 serial data line. The IPC software controls one of the following two gauge types:
• A digital gauge consisting if a two-digit numeric seven-segment display
• An analog gauge consisting of a needle pointer.
The IPC interpolates and scales the fuel level information that the IPC receives from the PZM.
When you operate the vehicle in diagnostic mode, either in the vehicle diagnostic system or with a scan tool connected, the fuel signal supplied to the IPC is not filtered by the PZM. The unfiltered fuel signal causes the IPC to show real time readings and may be mistaken as an erratic fuel level display.
Diagnostic Aids
Connect a scan tool to the DLC.

Oct 12, 2017 | Cadillac Cars & Trucks

1 Answer

2003 Chevy S10 had fuel pump replaced. When fuel gauge shows slightly below half, the gauge falls to empty and low fuel lights blinks. What could be causing this?


hi,

sounds like the sending unit rheostat(sending unit) has a bad contact or break in the resistance wire. inside the tank theres a float attached to an arm that goes to a small rheostat, like a volume control on a stereo. the rheostat is sending a scratchy signal or no signal to the computer and your getting these readings. that part is inside the gas tank, the part usually comes integrated with the fuel pump. the gas tank has to be lowered to fix it.

jm

Jul 04, 2017 | 2003 Chevrolet S-10

1 Answer

Mitsubishi Colt fuel gauge fault


the floater is the fault which is in the fuel tank.

Aug 21, 2012 | Mitsubishi Cars & Trucks

1 Answer

Replace fuel pump and sending unit 1997 cadillac deville. before replacing old unit gauge read low fuel but tank has 4 gal or more. after replacing unit gauges read fill with switch in on protion gauges...


what could be the problem ???? The problem is you tried to fix something you have no clue how it works .... Your best bet , take it to a qualified repair shop. You have no idea of the complexity of these cadillac systems . I know you don't have a $ 5000 dollar factory scan tool or equivalent to diagnose . The sending unit in the fuel tank is a input to the BCM . The BCM sends this info to the instrument cluster over the class 2 serial data network - communication network for the control modules on the vehicle. Fuel Level
The body control module (PZM) monitors the fuel level sender input in order to determine the current fuel level. The PZM filters the input and sends a message via the Class 2 serial data line. The IPC receives this message and displays the current fuel level. The fuel level is sent from the PZM to the IPC at changes of 0.5 L (0.02 gal) or on the request of the IPC, with a resolution of 0.04 L (0.01 gal).
• For the digital IPC, when the fuel level is above 18.5 gal, the IPC displays an F. For readings between 18.5-2.5 gal, whole gallon/liter numbers are displayed. When the fuel level reaches 3.0 gal the message FUEL LEVEL LOW is displayed on the driver message center. When the fuel level reaches 2.5 gal, the IPC displays an E. When the fuel level is 1.2 gal or below the IPC displays a flashing E.
• For the analog IPC, when the fuel level is above 18.5 gal, the fuel gauge pointer is on F. When the fuel level is below 2.5 gal the fuel gauge pointer moves to E. When the fuel level is below 3.0 gal the IPC displays a FUEL LEVEL LOW message.
If the updates are not received or a communication error is detected, the IPC performs the following actions:
• For the digital IPC, the fuel gauge is dashed.
• For the analog IPC, the fuel gauge pointer moves to E.

Fuel Gage Inaccurate or Inoperative
Circuit Description
The IPC monitors the fuel level sent by the PZM through the class 2 serial data line. The IPC software controls one of the following two gauge types:
• A digital gauge consisting if a two-digit numeric seven-segment display
• An analog gauge consisting of a needle pointer.
The IPC interpolates and scales the fuel level information that the IPC receives from the PZM.
When you operate the vehicle in diagnostic mode, either in the vehicle diagnostic system or with a scan tool connected, the fuel signal supplied to the IPC is not filtered by the PZM. The unfiltered fuel signal causes the IPC to show real time readings and may be mistaken as an erratic fuel level display.
Diagnostic Aids
Connect a scan tool to the DLC.
Test for any set DTCs if no DTCs are set current. Refer to System Check in Body Control Module (PZM) Diagnosis.

Your best bet , take your vehicle to a qualified repair shop.

Feb 09, 2018 | 1997 Cadillac DeVille

1 Answer

Chevrolet Suburban 2500 8.1L runs out of gas with gauge reading 1/4 tank full. I refill tank with 25 gal ( fills tank) then it runs out of gas again after using 25 gal. secondary tank in rear doesn&


Get manual online under $10-15 and get complete guide on whether to repair or not, service it, and how to repair etc
you can get it from reliable-store or manualslife
really good plus instant help also availabel

Feb 12, 2018 | 2005 Chevrolet Suburban 2500

1 Answer

2005 Lincoln Town Car suffering from low fuel pressure, I have Changed Fuel Rail pressure sensor, Fuel Pump driver, the fuel pump in the tank and the fuel filter but it is still showing only 26 psi fuel...


The ford spec listed in the ford engine control manual is:

General Specifications Item Specification Fuel tank capacity 71.9L (19 gal) Fuel Pressure Hot restart 448-482 kPa (65-70 psi) Key ON Engine OFF (KOEO) 140-415 kPa (20-60 psi) Key ON Engine Running (KOER) 170-280 kPa (25-40 psi)

Are you measuring the fuel pressure with a mechanical gauge or are you using a scan tool . If with a mechanical gauge, does the gauge have an air purge? What symptoms does the vehicle present. If running rough you could have a fuel injector leaking. Are you measuring the fuel pressure with the key on engine off? If so, did you cycle the key a few times? Good luck

Apr 05, 2011 | 2005 Lincoln Town Car

1 Answer

The gas gauge on my Ford 2006 F350 V10 28,000 miles is giving me false reading on my gas gauge. The low fuel continuously goes on no matter how much gas is in the tank. What could be the problem.?


The Fuel level FLOAT, in the tank is defective. Possible that it "holed", and has sunk to the bottom of the tank.
To check, separate the harness plug to the Tank sender unit, and ground the supply to a suitable place on the frame. The dash gauge should record "Full", therefore the sender unit is suspect.
regards. DT

Mar 11, 2011 | 2003 Ford F350 Super Duty DRW SuperCab

2 Answers

Fuel gauge does not move, stays on E, after car starts. Low fuel light is not coming on.


Hello graytape, was the fuel gauge and low fuel light working and then one day just stopped working?, if so, you have probably blown a fuse and you should be able to locate what fuse and where it's located in the owner's manual.
If you recently got the vehicle and then you found out that the gas gauge and low fuel light doesn't work then that is something completely different.
without knowing the year of the vehicle I can only give you an educated guess.
Many vehicles have a float in the gas tank and this float is directly linked to what you see on the gas gauge. However, after a number of years the floats get saturated from the fuel and become heavy, heavy enough to where they don't float anymore. That is one of the most common causes of the fuel gauge not working.
The sensor that activates the low fuel warning light may be independent of the fuel gauge and the fuel in the tank isn't low enough to turn it on. Your tank has to be very low to activate the low fuel warning light.
Good luck!

Jan 13, 2011 | Buick Park Avenue Cars & Trucks

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