Hi ! i may sound stupid but i don't know if i need another tune up or what? everytime i drive my car it does'nt run smooth it's like it was choking especially when the air condition was on and when i change gear from 2nd to 3rd and step on the gas it does,nt accelerate rigth away but instead it get choked.By the way i just have my tune up last 5 months ago .Thaks for your help.

Well I would think there's some kind of lag that would be induced by having your A/C on, but I doubt that's what's causing the problem. You just notice it more cuz something else is going wrong. I dunno... an EGR thing or something.... sorry I really have no idea. I just know that your A/C isn't what's causing it probably.

What do your spark plug wires look like. I had a set of bad wires on my car when I bought it, and when I changed them it was a night and day difference. Mine would lag and surge and generally run bad before, it sounds similar to what you have.