Most likely the alarm cpu or control module. Sometimes the relay between the module and the starter interrupt goes bad, trace the wiring, find the relay, make sure all connections are secure, if so, try replacing the relay. If not the problem, have it towed and have alarm checked out. There are a few other things to check. However, me realistically diagnosing the problem the way you describe would be like someone listening to a motor over the telephone and trying to determine if a cylinder has low compression. Nearly impossible. Without an actual working knowledge of the mechanics involved with your specific auto you will be lost. I could even describe how to by-pass the alarm between starter and battery, but unless I am there I would not suggest doing it by yourself. In any event, find the alarm cpu/module, follow the wiring to the relay that operates starter/interrupt, check wiring and/or replace relay. If this doesn't work, bring it to a good alarm mechanic, shop around and check the BBB for good guys in the business. One last thing, check your battery, make sure the voltage is appropriate and battery connections are secure. Good luck!
on May 19, 2013