why do my car cuts off when coming to a stop

yes the engine light stay on after I change the plugs and wires it was stolen once before from me and I haven't got it back rite since

If 'you' changed the plugs and wires then you can get me the trouble codes from the computer! Go to youtube and enter: how to get codes from an obd 1 gm, watch the video's, get the flash codes from your car and post the results for more info. It is pretty easy. You most likely have an egr problem or vacuum leak maybe iac valve trouble but the codes will help a bunch!! Hint, you will get a code 12 first then followed by the trouble codes. Video will show you just what to do. If in doubt, get some help.