Well back to the autozone thing. He said they couldn't pull codes unless the check engine light was on. They couldn't pull codes just for service engine soon light. He even hooked it up to try and nothing. Well she bought it in 2006 and hasn't had a tune up done (don't yell at me its not my vehicle). She has had the belts replaced and oil changes when due. I have a friend that is going to do what you suggested to see if that helps. Thanks for all the info!