1989 Chev Camaro IROC Won't Start - Ignition System

Question: Sometimes when I go to start up my car it does nonthing, but show me the security light, along with the service engine soon light, and I wait a few minutes and it will start right up. Also sometimes when I am stopped at a stop light, my car will turn off, and the service engine soon light will come up, but always starts right up. It is the V-8 305(L03) TBI option. What is my problem.

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Technican: Hello, I've been thinking about this car. Do you have a "chip" in the blade of the ignition key that the security module in the car "reads" before the car will start? Anytime the engine is not running but the ignition is on, the SERVICE ENGINE SOON light should be on. That is normal. If this car has never had an ignition lock cylinder replaced in all these years of service, wear in the lock cylinder may be responsible for not reading the computer chip in the ignition key so that the security module will allow the car to start. I have had an improvement in key chip performance by simply cleaning the chip in the key with rubbing alcohol to get dirt, hand lotion and the like off the key. As for the engine turning off at a light, it sounds like it just died at idle and is not a security module issue as it restarts okay without delay. That could be a simple tune-up or idle speed adjustment need. Your thoughts?,
Technican: Hello, Any news here?
Technican: Hi, will you please update the status of your question? Still need help?
Technican: Hello, What is happening here, please? Please advise.

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