I have a 99 alero,with a 3.4 litre.When its cold the car starts and runs fine.But if i turn it off and try and restart it,it will stall unless i give it gas for a minute,then it willl run fine again.....any ideas?

I have a 99 alero,with a 3.4 litre.When its cold the car starts and runs fine.But if i turn it off and try and restart it,it will stall unless i give it gas for a minute,then it willl run fine again.....any ideas?

sounds to me like a possible iat sensor failure. though it could be dirty injectors or a lot of things.