I have an 04 Ford Exploder and for some reason lately it is engaging in 4wd out of nowhere. Seems to be happening when I put it in reverse or when slowly making a turn when first started. Sometimes the front end will grind then make a clunking sound when turning a corner then go back to 2wd. This POS only has to last me a couple more months so I really don't want to put any money into it. Is there a way to disengage the 4wd altogether? Anyone ever hear of this problem? Any help is appreciated. Thank you!!