I have a 1994 jeep grand cherokee manufactured in October 1993. The problem I'm having is that the jeep wont start. At first we had no gas, no spark. We checked crankshaft sensor...it's ok, but still no start. We changed distributor, at first it wouldn't start, but we had gas...finally it started and ran for a few minutes, then it died and won't start again. No check enhine light to find out codes. What does the security circuit or auto shutdown have to have it shut down?? also when batery cable is offand we put it back on it sparks as if something were on but everything has been shut off, doors are shut, lights are off, radio is off, and dome light is off. Could this be tied into the security or auto shutoff circuit???