Started the 2010 CR-V up and there was a loud noise and vapor shot out under the vehicle behind the front passenger tire. Started again and a noise and the engine died from idle. On consecutive starts it ran fine for about 30 seconds then got rough. I believe the AC pulley engages when the roughness starts(AC is not turned on) and it stays engaged. Pulled the AC relay and it runs fine. I am not that familiar with AC. Compressor? broken line? bad relay? Do ac systems have a pressure release hat blew?