How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Virtual Wrench Your Own Question
Virtual Wrench
Virtual Wrench, BMW Mechanic
Category: BMW
Satisfied Customers: 14618
Experience:  35 years Master Mechanic
2617050
Type Your BMW Question Here...
Virtual Wrench is online now
A new question is answered every 9 seconds

I replaced my Starter i had the battery disconnected a week,

Customer Question

I replaced my Starter i had the battery disconnected for about a week,
now i had jumper cables attached to my car and while getting a jump i tried to start the car
no luck i dont know whether it is an alternator problem or a battery problem or both or even something else. what would you recommend i do to address this issue please.
Submitted: 1 year ago.
Category: BMW
Expert:  Virtual Wrench replied 1 year ago.

hi, do you have a volt meter to test something?

Customer: replied 1 year ago.
No i do not. I just replaced the battery. I tried starting it. It starts and then dies out
Expert:  Virtual Wrench replied 1 year ago.

Thanks. It sure has all the symptoms of a faulty alternator. Because of all the electronics in the car it MUST have 14-15 volts comng out of the alternator or it wont run.