car wont start. help me please

Discussion in 'Community Discussion' started by WhiteIphone5, Feb 22, 2013.

  1. macrumors 65816

    WhiteIphone5

    Joined:
    May 27, 2011
    Location:
    Lima, Peru
    #1
    Battery and starter were replaced last September so I know battery couldnt be that dead. When put in the key to start nothing happens. All silent no noise No lights at all. I did not leave anylights on as I got home in the day time too. What could be happening? I had my oil changed about two months ago as well.
     
  2. Moderator emeritus

    r.j.s

    Joined:
    Mar 7, 2007
    Location:
    Missouri
    #2
    Sounds like the battery ... do you have jumper cables / a neighbor that can jump you?
     
  3. thread starter macrumors 65816

    WhiteIphone5

    Joined:
    May 27, 2011
    Location:
    Lima, Peru
    #3
    I will try in a few once my parents are back. I still don't understand the battery is only about 4 months old. Could it be that it is extremely cold here? Last time I filled anti freeze was about 4 months ago but then if it was engine or something wouldnt the light at least come on?
     
  4. Moderator emeritus

    r.j.s

    Joined:
    Mar 7, 2007
    Location:
    Missouri
    #4
    Yes, the cold can cause a battery to not give enough power to start.

    If it was the starter, the lights would come on.
     
  5. thread starter macrumors 65816

    WhiteIphone5

    Joined:
    May 27, 2011
    Location:
    Lima, Peru
    #5
    Yeah 4 months ago it cracked but not start. Aparantley my battery was really bad and my started too so both got replaced. So I'm still wondering what's going now.
     
  6. Moderator emeritus

    r.j.s

    Joined:
    Mar 7, 2007
    Location:
    Missouri
    #6
    My best guess is the battery - whether it is actually drained or just frozen, I can't know for sure.

    You could try warming the battery somehow, or jumping it. Once you get it started, it will be important to leave it running for a while.
     
  7. thread starter macrumors 65816

    WhiteIphone5

    Joined:
    May 27, 2011
    Location:
    Lima, Peru
    #7
    OK I'll get back to you with results. Thanks So much!!!
     
  8. macrumors 6502

    Muscle Master

    Joined:
    Oct 15, 2010
    Location:
    Philadelphia
    #8
    If there's a hill nearby.. you could jump it yourself, but yeah.. its the battery
     
  9. thread starter macrumors 65816

    WhiteIphone5

    Joined:
    May 27, 2011
    Location:
    Lima, Peru
    #9
    lets say the alternator was dead? wouldi get some lights at least?
     
  10. Moderator emeritus

    r.j.s

    Joined:
    Mar 7, 2007
    Location:
    Missouri
    #10
    It's not the alternator ... it only works once the engine in running.

    At least, that isn't your immediate problem - the alternator could be dead as well, which could explain the dead battery.
     
  11. thread starter macrumors 65816

    WhiteIphone5

    Joined:
    May 27, 2011
    Location:
    Lima, Peru
    #11
    So say I jump start and car still won't come on. Then its the alternator?
     
  12. macrumors 65816

    Mousse

    Joined:
    Apr 7, 2008
    Location:
    Flea Bottom, King's Landing
    #12
    The alternator charges the battery when the engine is running. It doesn't do squat if the engine is off. The easiest way to test the battery is with a multimeter. If it shows less than 12 volts then the battery is kaput. Even with 12 volts, the battery might still be bad. You need to test it under load to see if it's truly bad. Most auto parts shops can do that for you.

    An easy test to see if the alternator is bad is also with a multimeter. You should be getting 13-15 volts with the engine running.
     
  13. Moderator emeritus

    r.j.s

    Joined:
    Mar 7, 2007
    Location:
    Missouri
    #13
    No. If it was the alternator, the car will start and run, but when you shut it off (after it's been running for a while, at least an hour) it will not start again.

    The alternator charges the battery and provides power for the electrical system when the car is running. If the alternator is dead, everything runs from the battery.
     
  14. thread starter macrumors 65816

    WhiteIphone5

    Joined:
    May 27, 2011
    Location:
    Lima, Peru
    #14
    So If I jump start and It turns on and say I drive it for a bit then turn it off. But when I turn it on and it doesn't come on then its the alternator
     
  15. Moderator emeritus

    r.j.s

    Joined:
    Mar 7, 2007
    Location:
    Missouri
    #15
    Possibly. The only way to be sure is to take it to a mechanic if it does that.
     
  16. thread starter macrumors 65816

    WhiteIphone5

    Joined:
    May 27, 2011
    Location:
    Lima, Peru
    #16
    Oh OK thanks for the help I really appreciate it
     
  17. macrumors 603

    Tomorrow

    Joined:
    Mar 2, 2008
    Location:
    Always a day away
    #17
    No, and no.

    If your battery is as dead as you've described, it's entirely possible that (1) you won't be able to jumpstart the car, and/or (2) simply driving it around for a bit won't charge the battery enough for you to restart the engine after shutting it off.
     
  18. thread starter macrumors 65816

    WhiteIphone5

    Joined:
    May 27, 2011
    Location:
    Lima, Peru
    #18
    How long to leave it on?
     
  19. macrumors G5

    Consultant

    Joined:
    Jun 27, 2007
    #19
    If you get car started, around 20 minutes should give it sufficient charge. Just make sure no one take off with it. And don't have it running in an enclosed area.

    How much do you drive it everyday? A lot of short trips? You are probably not driving enough to recharge the battery.

    Cold messes with batter power too.
     
  20. macrumors 68000

    Joined:
    Apr 25, 2012
    #20
    When you do get it started and take it for a drive shut off any electrical load you can (heated seats, heater fan, radio) to help speed the charging. Something the others missed is that you could have a bad/loose ground connection, especially if you have no lights at all.
     
  21. thread starter macrumors 65816

    WhiteIphone5

    Joined:
    May 27, 2011
    Location:
    Lima, Peru
    #21
    What is this ground connection? Loose cable?
     
  22. thread starter macrumors 65816

    WhiteIphone5

    Joined:
    May 27, 2011
    Location:
    Lima, Peru
    #22
    hey i found one of those battery booster packs and im charging it, it has a red cable and black cable to jump start. Red goes to negative and Black goes to positive? sorry for just a noob question but im new to this
     
  23. macrumors 6502

    Knoodles

    Joined:
    Feb 2, 2003
    Location:
    Gone to the Beach
    #23
    No! Red is positive and black is negative.
     
  24. macrumors 68000

    Joined:
    Apr 25, 2012
    #24
    NNNOOO!!!

    Look that wires on the car, match the red to the red. The black on the booster should go to a good ground (NOT the black on the battery), it should be an un-painted surface such as a mount bolt on a component on the drivebelt end of the engine or a bolt on the strut/shock mount.

    http://www.edmunds.com/how-to/jump-start.html

    ----------

    Yes. It could even be on the battery but it could be on the starter or the engine block someplace.
     
  25. thread starter macrumors 65816

    WhiteIphone5

    Joined:
    May 27, 2011
    Location:
    Lima, Peru
    #25
    i as just told black on black and red or red now black on surface? ugh

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    its a jumper box btw not jump start from another car
     

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