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Hey guys, i'm hoping someone can help me out with this problem I just recently started having. I have a 2001 Hyundai Sonata V6 with 95k miles. Just yesterday I start up the car no problem in the morning and drive to drop off my son at daycare. I kill the engine and drop off my son. Less than 5mins later I get back in the car and nothing. It's as is if I didn't have a battery in the car at all. I get a guy to help jump my car and it starts by showing me the lights on the dash very dimly and takes a really long time to finally gather up enough juice to crank. After this, I immediately go out and buy a replacement battery. Everything starts up fine and i'm good for the rest of the day. Next day the car starts up fine in the morning and I go to work. When I go to start up the car for lunch, same thing no power at all. Is it possibly the wiring or maybe a fuse? Alternator?

Any help is greatly appreciated as I'd hate to keep buying parts I may not need!
 

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I am not for 100% sure nor a professional so don't quote me on this. BUT I believe thats an alternator going out on you. If it was a weak alternator you'd be able to drive but barely( I have ALOT of experience with running a car on a weak alternator lol) but I think in this case you alternator has basically ceased to exhist.

From what I understand The car runs off the battery that is charged by the alternator. SO, basically if you are running around w/o an alternator you better have a lot of spare batteries.

Hope this makes sense and helps.
 

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QUOTE (the.koreans @ Aug 11 2010, 10:09 PM) index.php?act=findpost&pid=348844
I am not for 100% sure nor a professional so don't quote me on this. BUT I believe thats an alternator going out on you. If it was a weak alternator you'd be able to drive but barely( I have ALOT of experience with running a car on a weak alternator lol) but I think in this case you alternator has basically ceased to exhist.

From what I understand The car runs off the battery that is charged by the alternator. SO, basically if you are running around w/o an alternator you better have a lot of spare batteries.

Hope this makes sense and helps.
Get yourself a digital multimeter from Walmart. Turn the switch to the left on the V side at the 20 location so it will read up to 20 volts. Put it on the battery with the car off. It should read in the 12 volt range. Now start the car and read the voltage again. It should be 13 to 14 volts. If not, then the alternator is not working. ALternators at 2000 rpms will put out over 14 volts. If you don't see the voltage go up, then it is bad.
 
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