new alternator and still not charging right - TCCoA Forums
 
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post #1 of 12 (permalink) Old 09-17-2006, 11:26 AM Thread Starter
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new alternator and still not charging right

So one week after the alt went out on my V6 I notice the battery light was on in my V8. The voltmeter was running low so I turned on my CD player which has a built in voltmeter. It was staying at around 10-10.5. I made it home and parked it since I had to head to work that night and didn't have the time to mess with it.

So a week or so later I got around to changing the alternator and I'm still having the same problems. The battery light is still on and the voltmeter on my CD player is reading about 11.

Does anyone have any ideas? I'm not a genius by far when it comes to cars but I try to do all of my own work for the learning experience and the charging system seems pretty straight forward.

The only other thing that I can think of is the belt might be slipping. The belt was put on when I did the engine swap which means it has less than 5000 miles on it but I had a power steering leak(mercon V) that was causing the belt to wear and spraying black dust. It's possible that the belt has stretched from that. I picked a new one up this morning but haven't had a chance to change it yet.

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post #2 of 12 (permalink) Old 09-17-2006, 11:45 AM
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could be....if you replaced the alt and it is still doing it, try a belt.

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post #3 of 12 (permalink) Old 09-17-2006, 12:51 PM
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could it be a defective alternator?

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post #4 of 12 (permalink) Old 09-17-2006, 12:55 PM
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why dont you take it to autozone and have them test the charging system?
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post #5 of 12 (permalink) Old 09-17-2006, 02:41 PM
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There is a "Master Fuse" that is located were the main harness on the trunk. If that fuse went bye bye, you can have a new alt and new battery and it will drain on you. Check that fuse and just to be sure, check your grounds. Any acid on the terminals?


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post #6 of 12 (permalink) Old 09-17-2006, 04:24 PM Thread Starter
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Quote:
Originally Posted by kermit
could be....if you replaced the alt and it is still doing it, try a belt.
I'm going to change it in the morning.

Quote:
Originally Posted by Me007gold
could it be a defective alternator?
It's having the same symptoms that it had before I changed it. I'll probably pull it off and switch it out if changing the belt doesn't work.

Quote:
Originally Posted by FordFanatic
why dont you take it to autozone and have them test the charging system?
I have no faith in those machines. Two days before the alt on my V6 went out I had it tested and there was no problems with it and it was supposedly running at 14 although the gauge was telling me different. I already knew it was going out.

Quote:
Originally Posted by Tx_Cat
There is a "Master Fuse" that is located were the main harness on the trunk. If that fuse went bye bye, you can have a new alt and new battery and it will drain on you. Check that fuse and just to be sure, check your grounds. Any acid on the terminals?
Where exactly is this fuse? Terminals are clean. I took the wire brush to them the other day.

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post #7 of 12 (permalink) Old 09-17-2006, 09:43 PM
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did you forgot to reconnect the small plug wire on the altenator?

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post #8 of 12 (permalink) Old 09-17-2006, 10:50 PM
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Test the battery as well.

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post #9 of 12 (permalink) Old 09-18-2006, 12:40 AM
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post #10 of 12 (permalink) Old 09-18-2006, 07:23 AM Thread Starter
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I thought about the battery last night. It only has about 5000 miles on it also. I put it in right before I did the engine swap. But it should be under warranty so it won't cost anything.

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post #11 of 12 (permalink) Old 09-18-2006, 01:24 PM
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also grab a sharp utility knife and cut a slit down the power and ground wires (as far away as you can from the battery terminals)....if you see green buildup instead of bright shiny copper, cables could be suspect to corrosion
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post #12 of 12 (permalink) Old 09-20-2006, 09:09 AM Thread Starter
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Thanks for the help guys. I figured it out this morning. It was the 15 amp generator fuse under the hood. I checked all of the fuses the other day and some how I completely overlooked it. I knew it was going to end up being some small stupid BS that I was overlooking or just didn't know about.

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