Erratic idle can be caused by many things. When the car died it could very well been because the engine was running so poorly, but it also opens a whole separate door of problems. I wouldn't start there though. I'm not familiar with the model, but all engines need three things to run; spark, air and fuel. So I would suggest checking your air filter, spark plugs, wires, distributor assembly, fuel injectors, and fuel pressure. From there, specific parts that cause bad idle include emissions equipment, dirty throttle body, mass air flow sensor, throttle position sensor, idle air control valves, etc. Idle problems can be a huge headache. One easy thing you might do is start the car and go around to the tail pipe and feel the air coming out. If it comes in burst and car might be misfiring. Knowing that would be huge help in diagnosing the problem. Try feeling tail pipe air from a good running vehicle(suzuki)for comparison.