Bought not running at auction. Removed pump and it runs with jump pack hooked to it out of tank. Key on,wire at tank gets current for a few seconds. Also shows current briefly when key is cycled off. Coil has voltage,but not getting to plugs. Also,fuel gauge reads full with key on,then empty when cranking. Is there a factory security system?? Security light cycles on-off when key is on ,just once. Can this be a problem?? Can the computer be a problem??? Any help appreciated. 4.3 v6 automatic if this helps. Thanks Gi