I know this topic is around but I've been looking and can't find the solution. 2004 6.0 and I put in a new WIF sensor and took off the cover and cleaned the junk out but it still comes on after a minute or 2. What am I missing??

 

Some have suggested changing filter at the same time. I think the manual says to do this also.

 

I forgot to mention it but the filters have been replaced as well with no results. Hmm...

 

Start looking at the harness for damage. Rodent chew marks
or any chafing of the wires is all it would take to short that sensor
wire together and then you get a WIF.

Here is the diagram for the WIF sensor and the connector that
is on the PCM end. Pull both the sensor and the PCM connectors
off and check the sensor signal lines for shorts between the two.
You only need to check it on the HFCM end.
BUT MAKE SURE THE PCM END IS ALSO UNPLUG.
If you have reisitance between the two wires then you will want to look more.
Be sure to have the meter set for continuity and if you have the opting
have the beep on. That makes is less of a pain and you don't have to
keep an eye on the meter just listen to it. When making you connection
to the connector do what is called "Back Probing" or you run the risk of
opening up the connector sockets more with the probe end.


Let us know how this goes.


Sean


6.0L Tech Folder