I was driving my camaro yesterday... and i was aware that it was idling really low so i was planning on changing the spark plugs. I had to brake hard and my car stalled or something and the wheel locked (its an automatic) and i had to stop and start again. Are these connected? It is something i need to get fixed. What caused it? Also im getting a sputtering sound from my exhaust after its been idling... Are these seperate things or are they all connected in some way.