Dec 17, 2009 · Stalls When Stopped & AC/Defroster Turned On The strangest thing is happening to my 2000 Galant ES. If I am moving and turn the AC or front defroster on the car continues to run (although i do notice that the tach jumps around a bit when i take my foot off the gas). On an older car the only difficulty is going to be starting a cold engine and if it was cold, you wouldn't have the A/C on in the first place :) Your dad may have gotten confused with the issue of starting with the heat on can make the engine take longer to warm up to running temperature. Jun 23, 2009 · I have a 2002 nissan altima, the car runs good but I notice that when I turn on my air conditioner and I come to a stop sign the car turns off. I can easily turn the car back on but as long as the air conditioner is on it keeps doing the same thing. What makes the engine die when I turn on the a/c on my 2008 Nissan Altima? 3 Answers. The a/c had not been blowing cool air. i was going to add freon to see if it would help. Didn't get around to it yet. A coouple of days ago I turned the a/c on again and the engine died just like you ... Hmm you say AC. i never accuaclty tryied that b4. but what i can say is the same thing will happen if you turn on ur front defroster. the car will violently shake n rev lower to near death and or die.