My 94 Jeep Wrangler has an electrical starting problem. When you first get in and turn the key the jeep will turn over but never start. If you leave the key in the on postion after a few min. (sometimes 1 sometimes 10) you will hear a bunch of clicking in the relay box by the battery, then the clicking stops. Also then the check engine light will come on. Then when you crank it over it will start. If you run the jeep for a while (take it for a spin) then shut it off have a beer or two then try to start it. It fires right up. BUT if sits over night or for long periods of time the problem starts all over again. I have bought and replaced the relays in the relay boxs thinking they may be bad not the case. Any ideas?