The Chrysler PT Cruiser was built from 2000ÔÇ"2010 and was powered by a variety of engines. Your mechanic can tell you for sure which engine would be the correct replacement, but you should be able to choose from the following Chrysler engines:
1.6 L EJD I4 (gasoline)
2.0 L ECC I4 (gasoline)
2.4 L EDZ I4 (gasoline)
2.4 L EDV/EDT I4 (t/c gasoline)
2.2 L EDJ I4 (t/c diesel)
For additional assistance, please find an AskPatty Certified Repair Shop at http://www.askpatty.com/search/?type=all&m=30&q=&keyword= and they can help you diagnose and repair the problem.