YES!!! That is it D2G, Thank You, your are the MAN!!
I bought mine on e-bay for CHEAP! Works alot better than the water to gas thingy that they are selling.

 

No, I disconnected my flux capacitor - I got sick of ending up in the 70's, too much polyester and Disco (not Disco's ha,ha, they were really cool).

I just went out to the truck, my problem was a very noisy (and small) fan located to the left of the steering column. Pop the fuse panel below the dashand look up. My fan was very gummed up, it looks like it cools the electronics or something.

Now I'm wondering why my idle solenoid hums so much when the ignition is on. I can put my hand on it and feel ithumming like crazy, that's not normal huh?

 

So there is a fan under the dash like on a computer? Thats pretty cool, I did not know that DII's had that.

 

Exactly, it looks just like a computer fan. I draws air in thru a small vent just to the right of the mirror adj. ****.

 

Well thank you for posting what you have found jkid, now anyone who has a similar problem will have an idea of where to start.

 

That's what those vent holes are for??!! When I was wiring the switch for the HID's I saw some brown gunk and attempted to clean it out. I'll have to take a closer look and see if I can find that fan. Mine is not making a noticeable sound, but prevention is key with these trucks, right?