Stuck the key in the lock of the driver's side door, and it wouldn't turn. I'm already going over prices of locksmiths, taking apart the door, etc., etc., (in my mind). Then I remember what my grandpappy taught me! Gave it a few squirts of WD-40 inside the keyhole, and voila........fully functional lock.

WD-40 ftw

 

(I pretty much wrote this same thing in another post of mine... but anyways) I had the same problem, and did the same thing. (on my 98 ranger). But about 2-3 weeks later, it started doing it again. It seems wierd, but it only seems like it does it when its cold????

 

Try shootin some white lithium/silicone grease in there to keep it freed up?

 

I like that idea. Will definitely do in two or three weeks.