BMW Questions? Ask a BMW Repair Expert for Answers.
Hello, my name is ***** ***** I am a professional here at Just Answer. I have noticed that your question was not getting a response and thought I would see if you still need help with this.I apologize for the delay and I hope I can still assist you with this here. I would start first with removing the battery and having it charged and tested to be sure it will hold a load . If it checks okay and has been charged then reinstall it and see if the engine will start and run. If it dose then the next step would be to have the charging system tested on your new alternator to be sure its charging at the proper rate of 14 volts.