Originally Posted by muhoo
I've got a 1998 E350, and the Water in Fuel light hasn't come on for over a year now, even though we've had the wettest winter in 10 years. The lamp works because it lights during the indicator check when I first start the engine. But that's it.
I finally drained the fuel/water separator last week, just to see what's going on, and it didn't look like there was any water in there, just fuel.
Should I drain it even if the indicator isn't coming on? How often?
And how would I test that the WIF sensor is working properly?
The sensor is attached to the fuel bowl. I have the Ford Factory CD that has every test you can think of on it. I am at work so I can't get to it at the moment. Later on I can copy the info for you. In my opinion, I don't care about that sensor because as long as you drain the fuel bowl of water every oil change (3000 miles) you should be pretty safe. Unless you buy really Sh**ty fuel. Also, if you all of a sudden decide to use biodiesel in any grade )B5, B20, B50, etc... you should change the fuel filter right away as well as drain it, because I hear it cleans your system out and the filter catches all the crud it cleans.
Anyways, I'll post that testing procedure if I remember tonight.