I am the new owner of a 2004 Liberty Jeep. I found this site because I had a mechanic, supposedly, put a new engine in it and 2 days later I am having the same problem. So, I started researching to see if it were possible to determine if he just patched the problem. I guess that's why he emphasized not to let anyone touch the engine because it's under warranty! I have only driven it 70 miles --- it's sitting in my mom's yard waiting to find it's way back home.:doublepuke: But, I also want to learn more more about my vehicle. Thanks much!