Just got a WJ not long ago and have a couple of questions
1) There is a ticking noise, doesn't seem to be coming from the engine. If it is it is near the back towards the dash. But there is a round metal covering that on the far drivers side attached to the firewall and it is coming from around that area if I hear it right. I have searched a little and found that another guy had the issue but his engine oil and spark plugs proved a bad cause when his motor stopped. The Jeep has only had Mobil 1 synthetic and K&N oil filters with the past owner. I am planning to switch to Castrol Syntec Edge synthetic oil with the same filters. when it is due.
2) My transmission seemed to be jerking just before I would come to a complete stop. I read that it isn't actually the tranny but something like a slenoid maybe? I had the transmission fluid changed and the filter replaced at 75k (which was only about 2 weeks or so ago) and it was doing it before that.