There is a hose hanging from the bottom of my 1998 Jeep Grand Cherokee. One end connects to the front drive differential, where does the other end connect to?
If you look under there you should find a steel or plastic line that runs up to a place inside the engine bay.( If it is connected directly to the differential) If it is connected to a box mounted on the right side axle it is part lof your 4x4control and should carry vacuum. With engine running you will hear vacuum leak and easily find connection point.
(but you didn't mention any driveline problem so it's likely the first, which is only a vent line. as long as it is not pointing foreward or straight up it is also ok to just secure it out of the way. (but not where it will become submerged in water etc.
You dont mention if the jeep was new or used when you bought it which is a significant point to consider (this is for others as this is an old posting I am commenting on). This is either a vent line as is listed in the most significant answer, OR an air or vaccum line that operates a selectable Locking Differential that may be an option or added by a previous owner. If this is the case the front "LOCKER" is inoperative whit this line disconnected and it needs to be repaired. The big point is you NEED to KNOW your equipment in order to know what route to take to effect repairs yourself.
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Thanks for your help.
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