If you have the 2.3L or 2.5L 5 cylender engine, it is run by the timing belt. The 2.3L 4 cylender is not run by the timing belt. Others are not. Make sure that is the problem before replacing. There is a weep hole in the water pump. Check there for a leak. If the bearing or seal is bad, it will leak from that point.
Let me know what you find or if you have other questions.
Tuesday, December 7th, 2010 AT 7:24 PM