The factory CD does help when it comes to troubleshooting esoteric problems. The Bosch fuel injection book is a big help (ISBN 0-8376-0300-5). The car and fuel injection is actually dirt simple to work on yourself. You didn't say if it was a 2.3 or 2.6. Regardless, they're simple creatures. I still have a good exhaust manifold (used) for a 2.3 and a Bekkers sport cam (unused) if anyone here is interested (cheap). Enjoy.