It does this worse after i just start it but sometimes it's just bad all the time!...i just put on new plug wires and it started doing this...it has done it before but intermittently...now it's constant...all my wires are good and tight on the coil pack and the plug...it does it in the lower rpm's as i accelerate but not in the higher rpms...it never does it at idle...it idles normal...just when i accelerate...what is it? I'm affraid to drive it much! I dont wanna mess anything up!! PLEASE HELP!