How long will I make it? I just put a random model in.

Driving normal a/c come back on

Engine stumbles going uphill at times, hesitates at other times on flat road. Hesitates on acceleration from stop. engine light starts flashing and the front end starts shaking then it stops for a while and does it again real sluggish during this time.
If anyone know how to fix this problem, please email me at john1283ca@hotmail.com

I noticed the a/c unit suddenly quit working and we have determined the line going to the rear unit had been punctured and needs to be replaced

there has been no problem until today