 Parasitic Battery Drain source found: Now what? |
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| moneysmarts |
 Apr 6 2011, 03:50 PM
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Member  Group: Members Posts: 169 Joined: 2-March 04 From: Central Massachusetts Member No.: 1,745 Region Association: None 
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Long-time- no-post!
Hi all. Just took the car out of storage from winter, looking forward to driving. My new battery keeps draining overnight. So I tapped in-line my multimeter and started pulling fuses and relays to locate the source. When I pulled the alternator wiring harness plug from the relay board, the volts/amps dropped to zero. Bingo! But now what do I do? (IMG:style_emoticons/default/confused24.gif) Do I have a bad alternator or can I diagnose further? Thanks for the help. I'd hate to have to struggle to replace that bad boy for nothing. Steve |
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| moneysmarts |
Apr 7 2011, 02:22 PM
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Member Group: Members Posts: 169 Joined: 2-March 04 From: Central Massachusetts Member No.: 1,745 Region Association: None
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I have no idea Troy.
When the guy called me and said it was ready to be picked up, I asked him if the diodes were gone. He said they checked out fine. I told him I had a voltage leak, and described my tests, but he insisted they were ok. Just cleaned the brushes, and changed the bearing. |
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| messix |
Apr 7 2011, 02:33 PM
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AKA "CLUTCH KILLER"! Group: Members Posts: 6,995 Joined: 14-April 05 From: between shit kickers and pinky lifters/ puget sound wa.north of Seattle south of Canada Member No.: 3,931 Region Association: Pacific Northwest |
QUOTE(moneysmarts @ Apr 7 2011, 01:22 PM)  I have no idea Troy. When the guy called me and said it was ready to be picked up, I asked him if the diodes were gone. He said they checked out fine. I told him I had a voltage leak, and described my tests, but he insisted they were ok. Just cleaned the brushes, and changed the bearing. well then i guess you can throw it back in and see what happens. it might be as tom says that cleaning it up will cure it. before you pick it up i would ask them what test they do to analyze the output capacity of the alt. and if they check dc voltage ripple this will tell them if the rectifiers are bad [high ripple means bad rectifier] |
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Posts in this topic
moneysmarts Parasitic Battery Drain source found: Now what? Apr 6 2011, 03:50 PM
r_towle how far are you from Tyngsboro? Apr 6 2011, 03:53 PM
moneysmarts
how far are you from Tyngsboro?
I'm in Leom... Apr 6 2011, 03:54 PM messix diode in the alt is blown and is energizing the fi... Apr 6 2011, 03:54 PM Root_Werks Plug the alt harnes back in and the take the volt ... Apr 6 2011, 03:54 PM r_towle unplug just the alternator at the alternator.
It m... Apr 6 2011, 03:55 PM moneysmarts
unplug just the alternator at the alternator.
It ... Apr 6 2011, 03:59 PM r_towle not easily...but yes you can.
Chelmsford Auto Ele... Apr 6 2011, 04:01 PM moneysmarts [quote name='r_towle' date='Apr 6 2011... Apr 6 2011, 04:09 PM moneysmarts I just pulled out the voltage regulator from the r... Apr 6 2011, 04:07 PM r_towle well, that might seem easier, but it wont be in th... Apr 6 2011, 04:11 PM 76-914
well, that might seem easier, but it wont be in t... Apr 6 2011, 05:22 PM SLITS The alt harness unplugs from the relay board ........ Apr 6 2011, 05:24 PM moneysmarts
The alt harness unplugs from the relay board ....... Apr 6 2011, 05:35 PM moneysmarts Rather than pulling apart the sheet metal to get a... Apr 6 2011, 06:48 PM messix
Rather than pulling apart the sheet metal to get ... Apr 6 2011, 06:51 PM moneysmarts yes the diodes are blown and it needs to be rebuil... Apr 6 2011, 07:05 PM messix
yes the diodes are blown and it needs to be rebui... Apr 6 2011, 07:15 PM moneysmarts OK
Thanks much.
I'll have to pull it out tomor... Apr 6 2011, 07:20 PM Root_Werks Troy is my hero. :worship: Apr 6 2011, 08:59 PM Tom I would agree with Troy's assesment also, but ... Apr 7 2011, 12:58 PM r_towle in my recent experience with bosch rebuilt alterna... Apr 7 2011, 01:54 PM moneysmarts Rich:
I dropped the alt. off to Brian this morning... Apr 7 2011, 02:09 PM messix
Rich:
I dropped the alt. off to Brian this mornin... Apr 7 2011, 02:18 PM r_towle troy, these guys are very good.
This is all they d... Apr 7 2011, 02:28 PM messix
troy, these guys are very good.
This is all they ... Apr 7 2011, 02:34 PM r_towle OK, can someone post a diagram of that little wiri... Apr 7 2011, 02:33 PM moneysmarts Rich:
Just to refresh what I did...
When I pulled ... Apr 7 2011, 02:34 PM r_towle
Rich:
Just to refresh what I did...
When I pulled... Apr 7 2011, 02:41 PM messix
Rich:
Just to refresh what I did...
When I pulle... Apr 7 2011, 02:53 PM moneysmarts It looks ok, but I can replace it.
Any special gau... Apr 7 2011, 04:54 PM messix
It looks ok, but I can replace it.
Any special ga... Apr 7 2011, 05:29 PM moneysmarts how are you testing for draw? where are you doing ... Apr 7 2011, 06:51 PM SLITS Backup lights ... fuse 8 or 9? .... thru the main ... Apr 7 2011, 04:57 PM messix
Backup lights ... fuse 8 or 9? .... thru the main... Apr 7 2011, 05:30 PM SLITS The question was "Where oh where does the bac... Apr 7 2011, 05:34 PM messix so when you diconnect the wire from the alt to the... Apr 7 2011, 06:56 PM moneysmarts Yup.
Quirky.
I'll put it all back together tom... Apr 7 2011, 09:09 PM Tom I''l bet them cleaning it up cured your dr... Apr 8 2011, 08:50 AM TC 914-8 :popcorn:
I'm curious what it is
Keep us pos... Apr 8 2011, 10:58 PM moneysmarts
:popcorn:
I'm curious what it is
Keep us po... Apr 9 2011, 02:34 PM moneysmarts
:popcorn:
I'm curious what it is
Keep us p... Apr 11 2011, 08:34 AM |
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