I was crawling around under the front end of my '05 Rubi Unlimited. I noticed what looks like to be a vacuum hose that runs from the top drivers side of the radiator ( it is not connected but plugged with some sort of vent plug) and the other end is connected into the back of the front differential.
The hose was separated about half way between the radiator and the front axle. I made a repair, but am not sure what the hose for and if there is anything I need to watch out for. Not sure how long it has been apart.
Anyone out there offer me any insight?