My car studders when i dive with the air conditioner on ?

Question

my car studders when i turn the air on or at a stop light what is the problem?

Answer 1

Running AC always puts extra load on an engine. If your car needs a tuneup, it'll show greater with the AC on then without. If the Check Engine light is on, run it by Autozone, Amoco, or similar place and have them run a free diagnostics scan. Most likely it's just a tuneup issue, though.