When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Have you pulled any codes? If it's running rich, it's doing so because something has failed and the computer thinks it needs run rich. That, or the computer is running in open-loop mode and is ignoring any feedback. Either way you need to pull the codes.