This is the second time this has happened. I washed my engine today and when i was done the Water in fuel light came on for some reason and won't go out. I've drained the petcock and i've bled the filter and still nothing. Is there a sensor that could get wet and indicate WIF. Pretty much impossible to get water in the system by washing it isn't it. I never even opened the fuel door while washing. :eek:

Funny you mention that. I too had a similar experience a few months back. We had a 500 year storm come blow through our area. We had 11 inches of rain in just about in few hours. Water everywhere where there's never been water before. I knocked off my cat and bent my heat sheild on one puddle. Anywho, the fuel filter assembley on my van is next the lift pump under the drivers seat on the frame rail. My Water in Fuel light came on as I was going through an intersection, and I just about souped my shorts. I had just put a new IP on a few weeks before, and didn't want to see it die. Hit the water drain, all seemed well. But, all that water was right up in the whole filter assembley, and I wondered much the same about what you've just experienced on yours.

knkreb
Hmmmm... well i've drained both the filter and T at the front of the engine and the light is still on the next day here, drives fine, runs fine. What the heck should i do here now. Won't that T handle pull the (if any) water from the bottom of the filter bowl?

This is a picture of the sensor after it failed on me and was leaking diesel fuel, which was shorting the sensor.

Diesel fuel is insulative - the Water-in-Fuel indicator would not function, otherwise.

Saturated water is, however, an excellent conductor.

Mixture of road-salt, road-sand, water, Diesel fuel, dust, dirt, grime, etc, would be conductive.

Check the insulator, wiring, and connector(s), as QM is suggesting, for any or all of the above.

Disconnect the plug (or unplug the connector), see if the indicator illuminates.

This is a picture of the sensor after it failed on me and was leaking diesel fuel, which was shorting the sensor.
OK QM where is that located at again?

I think i found mine, passengers side of the filter housing at the bottom... not a nice position... just drained the bowl completely, nothing in there but gunk on bottom, clean now... must be the sensor.. tackle later and put up with pain in butt light for a day or two.

Correct - notice the large lettering on the housing body in QM's pic.

Large pipe on left is IN from lift pump

Larger of two on right is labeled DRAIN, to petcock.

Smaller of two is filtered supply to Inj Pump

You're looking at passenger-side view

A closeup of the sensor and how it was falling apart.

Could you make that pic a little bigger QM, i'm having a little difficulty seeing the part... (just kidding)
Anyways as of this morning mine seems to have corrected itself again, lights out for now, now that i know that sensor is there i'll have to avoid washing back there.