One problem related to engine noise has been reported for the 2003 Jeep Liberty. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2003 Jeep Liberty based on all problems reported for the 2003 Liberty.
I have heard this is a very common problem with the 3. 7 Jeep motors. From what the mechanics have told me is the lifters pop loose in the head and the engine sounds like it has blown. The lifter rattles around in the cylinder head making all kinds of noise. My first one was in I think 2007 on passenger side and the lifter jumped. To replace the broken parts was over 600. 00 and my second one on the drivers side destroyed everything in the cylinder head. The vehicle is sitting right now because I dont have the money to fix it so I don't know if there was external damage done as well. This is a very very common problem on all of the Jeep blogs with the 3. 7 motor in my 2003 Jeep Liberty and should be recalled to fix the problem for free.