Why my car shut off randomly, runs ruff, it also idles back n fourth??

Hello, it sounds like you have a loss of fuel pressure, or more likely have an overabundance of air coming into the engine. A vacuum leak or un-metered air leak can cause this. If the engine gets too much air, not enough spark or fuel may be present to overcome it, causing rough running and loss of power. This is just a guess from my computer keyboard; only a first hand inspection will tell for sure. Good luck.