I am currently purchasing a 91 Acura Integra and the vehicle doesnt always start on its own. The battery is brand new, and has the 12.5 recommended charge. We usually have to start the vehicle by jump starting it though. I've read up on forums that plenty of people are having trouble with starting integras. Im starting to believe it is in the wiring. I haven't found anything in the repair manual and I haven't found any wiring diagrams online either.