90 q45 won't start

[dosomthangs]

I brought a 90 Q45 from the auction without a key and the air bag deployed I took out the ignition and got it started sounds great by the way, i then got a key mad from a locksmith and it worked great I replaced the airbag and it never started again can you help please I changed the fuel pump I'm getting presure and spark and check all the fuses everything is OK I even disconected the air bag and tested it as well but it won't start just cranks but won't turn over what can I do I was told that it could be the computer not reconizing the key is there a way to reset the computer if that the problem or do you have any Ideas......