I have a 99 V6 Camaro and I just changed the sparkplugs but had ripped a boot and caused engine light to flash so i took the metal protective boot off and light was gone, but now I replaced the wire and put the protective boot back on and I don't get a really bad rough idle like before but it gives some sputters and when I take off it feels like its going to stall. Wondering whats wrong and what to do.

 

I changed the wires thinking it would solve the problem but its worse now.

 

I had that porblem a while back, and it turned out to be the spark plug coil.