Two problems related to engine noise have been reported for the 2007 Jeep Wrangler. The most recently reported issues are listed below.
In Feb 2015 my 07 Jeep Wrangler started making odd noises and running poorly than is stopped. My Jeep had 69,500 miles on it and a service was done within 1,500 miles. It was towed to the service center- it did not have a drop of oil in it and the engine was blown. There was no indication of a oil leak anywhere! no warning lights came on either. Jeep refused to even listen or assist in any way. $6k later. . . . . . I have a new engine and check it every week! now when I park and get back in the Jeep it wont start- wont even turn over. It will finally start after 4-5 turns of the key. Its not heat, not distance, nothing being left on, not consistent- there is no rhyme or reason at all!! a man in a gas station heard me trying to start the Jeep and came over and shared this- push on the shifter really hard and it will start- it did and has every time now. When I stop I just make sure I push on the shifter. There is no recall and no service bulletin but is normal in the 07 it appears.
It is a 2007 Jeep Wrangler x with a 6 speed manual, there is a loud squealing noise coming from underneath the truck. When in the rpm range of 1500 to 2000 rpms it makes this noise. It is starting to become very annoying because the more I drive the louder it gets. The dealership has replaced the throw out bearing per the TSB that was given. That has not fixed the problem. The dealership said they contacted Chrysler and that it would take 30 days to get a field engineer out to look at my problem to come up with a solution for it. So I am still waiting and not very happy with the dealerships outcome.