I have a Honda Civic VTi 2000 model Auto, the problem I'm having is that when I switch the AC on, the revs drop and the car starts shaking.
Secondly, sometimes what also happens is, I switch on the AC but it doesn't cool. It randomly happens sometimes but it hasn't been happening recenlty
I suggest you to please make sure that your car get proper warm up before starting, it usually happens on CNG. Otherwise you need to set your cng setting, by some expert.this problem will get solved.