What is in between the alternator and the battery?
10-27-2009, 02:06 PM
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What is in between the alternator and the battery?
I just replaced the alternator. The car dies if I disconnect the battery. I'm getting 12.96v from the post on the alternator to a ground and I cleaned the battery connections.
My question is what could be keeping the alternator from charging the battery?
My question is what could be keeping the alternator from charging the battery?
10-27-2009, 02:27 PM
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Re: What is in between the alternator and the battery?
Why would u disconnect the batter while the car is runnin? Do u mean ur jumping it and it dies wen u disconnect the jumper cables?
10-27-2009, 03:26 PM
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Re: What is in between the alternator and the battery?
There is a heavy white wire that runs from alternator to the fuse box... and that runs through a fuse and to the battery.
Check your grounds and clean them up.
Inspect your wires especially where they open up to a connector or lug.
Water sometimes gets in through there and corrodes the wire.
Your alt should be putting out a full 14v so maybe it's a defective alternator (they aren't always perfect even though they are new). Bad wiring or ground could cause this.
Check your grounds and clean them up.
Inspect your wires especially where they open up to a connector or lug.
Water sometimes gets in through there and corrodes the wire.
Your alt should be putting out a full 14v so maybe it's a defective alternator (they aren't always perfect even though they are new). Bad wiring or ground could cause this.
10-27-2009, 03:26 PM
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Re: What is in between the alternator and the battery?
faulty alternator
now that is change that i can believe in...!!!
now that is change that i can believe in...!!!
Last edited by BiG ChOr!Zo; 10-27-2009 at 03:34 PM.
10-27-2009, 03:33 PM
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10-27-2009, 03:37 PM
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Re: What is in between the alternator and the battery?
There is a heavy white wire that runs from alternator to the fuse box... and that runs through a fuse and to the battery.
Check your grounds and clean them up.
Inspect your wires especially where they open up to a connector or lug.
Water sometimes gets in through there and corrodes the wire.
Your alt should be putting out a full 14v so maybe it's a defective alternator (they aren't always perfect even though they are new). Bad wiring or ground could cause this.
Check your grounds and clean them up.
Inspect your wires especially where they open up to a connector or lug.
Water sometimes gets in through there and corrodes the wire.
Your alt should be putting out a full 14v so maybe it's a defective alternator (they aren't always perfect even though they are new). Bad wiring or ground could cause this.
I think it runs to the fuse block on the shock tower but I'm not positive.
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10-27-2009, 03:47 PM
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10-27-2009, 03:50 PM
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10-27-2009, 04:09 PM
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Re: What is in between the alternator and the battery?
If you can test for output right at the alternator you should see 14V.
Guessing you will see that 12.6V again... and it's a bad alternator.
10-27-2009, 04:25 PM
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Re: What is in between the alternator and the battery?
I disconnected the white wire from the alternator and started it up.
I put the positive test lead on the post the white wire goes on and the black lead on the frame.
I only got 1.47v from it.
I'm guessing that it was back feeding from the battery before?
I'm sure this is getting very technical but does the green plug on the back of the alternator tell it to "turn on"? I just don't want to pull it back out just to find out it's something else.
10-27-2009, 09:45 PM
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Re: What is in between the alternator and the battery?
return the alternator to autozone if it does not produce 14.5V when operating normally. its very common to get a bad one from autozone. youre the second person in two days to come here wondering about a "new" alternator gone bad. it happens regularly with autozone alts.
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