Water In Fuel Light Woes - Ford Powerstroke Diesel Forum
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Old 06-11-2009, 07:22 PM
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Water In Fuel Light Woes

The truck is a 2003 with the 6.0L. A few weeks back I had the Water In Fuel (WIF) light come on. Luckily (I suppose) this happen about the time I was ready to do an oil and fuel filter change. I go through change the oil, drain the seperator, change the fuel filter at the seperator, and then change the filter in the engine bay. When I drained the seperator I noticed some water at the beginning of the drain and let it continue for about thirty seconds to make sure I got the water out. I cycled through a few times to fill the filters / bowls and started the truck up. The light was on at first and then went out. A week or so later the light came back. I ran through the seperator once again, this time not noticing any water but still let it drain for about twenty seconds. About a week later again the light comes back. This time I am out of town and the wife takes the truck to the dealer as she knows the light has been on before. They look at it and drain the seperator again, not seeing any water. Of course they are not able to replicate the light coming on either, shocking I know. She goes to pick it up and as she is away from the dealership the light comes on.

At this point I am thinking that the sensor has gone bad. I read in another post that these things corrode and cause false positives. Is this possibly my case and what does a replacement sensor run?

TIA

-JB
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Old 11-03-2009, 05:04 AM
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I have had this same problem. My "Drain Water Seperator" message comes on randomly every time I drive the truck. Sometimes in 3 miles, sometimes in 20. I took it to the dealer and they replaced the sensor. The message came back as I was leaving teh dealership.

I also have excessive DPF cycles so everytime I drive the truck (2008 F250) I am dealing with messages to both Drain the Water Separator and "Cleaning Exhaust". Is tehre a way to just disable the water fuel sep sensor altogether?
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