It's my wife car and now it is used by my son. To and from the university, it stops while he is driving on road, the mechanic tell us after weeks of checking that the problem from the main control unit , he changed some ic's in the control unit, but the engine never ran after the change, we told him the university is about to open in few days, today (the day f writing this text) , the mechanic said that the car is okay today, he said that the problem was from the Alternator!!! He replaced it and the engine ran ?It is good news but, I wonder !!!! What is the relation between the problem and the Alternator? Is there any relation, please can anybody answer this question? And thankful If he discribe the answer. I'm a technical and computer and microprocessor specialist.