The fan turns on when the engine reaches a certain tempurature or when the a/c gets turned on. If your fan doesn't turn on at all it may be your relay which is located under the right headlight under the bumper.
I changed the relay last week when used the jeep parked it for 2 minutes and went back to driving and noticed the temp at 240. Its a very easy job to do 30 min.
Originally Posted by qbny94
alright but the fan is suppose to be running as soon as i start my car right?