Security system shut the car down

I will check that out. The key is very old now since it is the original, and with 275k on the odometer I'm sure that key has been inserted too many times. Thanks

It's been awhile since I've messed with this Park Ave. We did in fact rule out the key as the culprit, and its' transponder ring in the column. We can get the car to start and run, but only for maybe 3 seconds. We thought it was then cutting off the fuel supply or the spark at the coil packs. That wasn't it. It now seems that what is happening is the signal to the fuel injectors is what is being cut out. Visible light in the noid until it just shuts off. Light goes out. Car dies. Will start back up and always does the same thing. What would cut out the fuel injectors? Where does that signal come from and what controls it? Any suggestions on what we might diagnose next?

I had a friend come by earlier today and check the key and transponder again. He brought some electronic box gizmo with I think three black knobs and some gauge reading panels. Said he used to use it to reprogram keys and security on cars years ago. He retired from Lefty's Auto Electric a few years back. They're the best in Phoenix and he was one of their best techs. He's bypassed pretty much everything in an attempt to isolate the problem. He said the key checked out ok and the security appears to be operating properly but something is shutting down the signal to the fuel injectors and he says he cannot bypass that function as it begins in the ECM. My car is titled as a '97 but the styling (and the windshield I found out is all '98). The schematic he was using today referred to a '98 and a couple of things didn't mesh (number and color of wires in the box up behind the glovebox) so he's coming back tomorrow with a schematic for a '97 to see if the changeover may be at issue here