i had the same problem a few months ago, car wouldn't start, and when i tryed to start it the car would shut down. no power to anything, lights radio power locks etc. then 5 minutes later the power would come back and the alarm would go off. come to fing out the wiring harness on the stearing colum was lose and shorting out. the alarm thought the car was trying to be hot wired and would go into safe mode. maybe the same thing is happening to u.
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89 GT AOD w/ shift kit, B&M rachet shifter, Trickflow intake, Crane (E-type) cam, 70Tb, 75MAF, 1.6 Rockers, Pulleys, MAC headers and H-pipe, Dynomax mufflers, K&N, 3 core radiator, white face gauges, custom interior, cobra R rims
MY89GT