Water in Fuel light - Diesel Forum - TheDieselStop.com
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6.0L Power Stroke Engine and Drivetrain Discussion of the 6.0L Power Stroke diesel engine and drivetrain in the 2003-Up Super Duties and Excursions. No gas engine discussion allowed except on transmissions and drivetrain that pertain to all models. Please confine discussion of topics in this forum to those items that are specific to the 6.0L Power Stroke engine.

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Old 03-05-2010, 02:48 PM   #1 (permalink)
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Water in Fuel light

2006 6.0 F-350, 93000 trouble free miles. My water in fuel light keeps coming on after the truck runs for a few minutes. I ran all the fuel that I could out of it when the light first started coming on. Drained the water separator 4 times while running that fuel out. Filled the truck up with fresh fuel from Flying J, never had a problem with thier diesel fuel. Changed both the filters and I have drained the separator 5 more times, I really do not see any water when I drain it. Could this be a sensor problem or do I really have that much water in the fuel tank. The light has only come on one other time in 90000 miles, drained the separator 3 times and that was the end of it. Runs perfect just keeps giving me the warning. Thanks for any help.
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Old 03-05-2010, 02:58 PM   #2 (permalink)
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Probably is the sensor in the water separator. You can try clearing the code with a scanner or disconnecting your batts for a few minutes to clear them. It doesn't sound like you actually have water in your fuel after all of that.
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Old 03-05-2010, 03:12 PM   #3 (permalink)
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Pull the sensor from the housing and you will see a bunch of crud and corrosion. Scrape it clean with a utillity knife, blow it off with compressed air. That should take care of it.
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Old 03-05-2010, 03:43 PM   #4 (permalink)
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TSB 06-22-12
11/13/06
WATER-IN-FUEL (WIF) LAMP ON / FLICKERING
FORD:
2003-2005 Excursion
2003-2007 F-Super Duty
2004-2005 E-Series

This article supersedes TSB 06-6-5 to update the Service Procedure.
ISSUE
Some 2003-2005 F-Super Duty vehicles built prior to 9/22/2004, 2003-2005 Excursion vehicles built prior to 1/10/2005, and 2004-2005 E-Series vehicles built prior to 9/16/2004 and equipped with a 6.0L diesel engine, may exhibit an intermittent I flickering water in fuel (WIF) lamp. The intermittent condition may be more prominent while turning corners, braking, or during uphill/downhill driving.

Some 2003-2007 F-Super Duty and 2003-2005 Excursion vehicles may exhibit a continuous WIF lamp on, even without the presence of water, due to debris in the reservoir or corrosion on the WIF sensor pins located in the manifold.
Some 2003-2007 F-Super Duty and 2003-2005 Excursion vehicles may exhibit both intermittent / flickering and continuous WIF due to corrosion and the lack of new calibration.
ACTION
Use the following Service Procedure based upon the customers symptom.

SERVICE PROCEDURE
1.For intermittent / flickering WIF lamp condition reprogram the powertrain control module (PCM) to the latest calibration using the IDS release B32.11 or higher. Calibration files may also be obtained at the website.
2.If the WIF lamp continuously illuminates without the presence of water, this may be due to corrosion on the sensor pins or sediment build up in the water reservoir.
a.Drain the horizontal fuel conditioning module (HFCM) reservoir and look for significant corrosion debris or sediment in the fluid drained from the reservoir. Remove the WIF sensor and inspect for corrosion on the pins. Remove the WIF Senor by first disconnecting the electrical connector, then using channel locks, rotate the WIF sensor at least 45 degrees counterclockwise. If there is corrosion / sediment on the pins, proceed to Step b. If there is not, refer to PC/ED lead diagnostics and do not proceed with the TSB.
b.If corrosion on the pins is causing the WIF lamp to illuminate, replace the WIF sensor with service kit, following the WIF sensor installation instructions in the kit.
c.If there was significant corrosion debris or sediment drained from the reservoir, clean the housing of the HFCM of any debris following the HFCM cleaning procedure. It is not necessary to replace the Manifold or HFCM assembly.
3.Vehicles with both an intermittent and continuous WIF light due to corrosion are to follow actions 1 and 2 as described above, referring to the vehicle built dates and application.


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Last edited by Rccarps2; 03-05-2010 at 03:47 PM.
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