Nissan

I have a 1997 nissan 200sx se with the 1.6 liter engine. when i do not turn on the air conditioner it idles fine but when i turn on the a/c it idles very low and sometimes tries to die. i have turned up the idle and clean out the thortle body as well. does anyone have any ideas of what could be wrong

Try puting it in park and then pushing the gas petal a little and then stop or the car just might do that try checking the oil too.