Join Date: May 2008
Location: Mesa AZ
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May want to check this - it's for different years but may be similar:
2003-2005 6.0 Water In Fuel Lamp Illuminated:
Some trucks may exhibit a water in fuel lamp that continues to illuminate after draining the water separator, or a flickering water in fuel lamp. This may be due to sediment build up in the water reservoir or a computer calibration issue. Check the electrical connections at the fuel pump assembly for damage or corrosion. If the harness is damaged, repair or replace it as needed. There is a jumper harness available, part number 6C3Z-9F759-A*. Remove and fuel manifold from the fuel pump and inspect for debirs inside, and clean as needed. If the sensors inside the manifold ot the sensor pins are corroded, replace the WIF sensro (fuel manifold) with kit 6C3Z-9C264-A*.
*The fuel filter heater has been deleted from the fuel manifold. When installing the updated harness or manifold, also remove the fuel heater fuse (2003/04, 30 amp fuse #105 under the dash; 2005, 30 amp fuse #7 under the hood). If the light is on intermittently or flickers, or will only go out if the computer stored codes are cleared, the computer may need to reprogrammed.
TSB# 06-6-5, 06-22-5; Broadcast Message 4968.
May '04 F-250 PSD 6.0
*Edge Juice Platinum with Attitude
*High Idle Mod
*Bypass Oil Filter
*AMSOIL synthetics - Transmission, Diffs, Engine, Transfer case
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