Robbob4
Forum Newbie
Posts: 2
Reg: 01-02-16
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01-02-16 07:14 PM - Post#2599580
My alternator is drawing 2 Amps when the car is off, draining my battery. When I unplug the alternator the amp draw disappears. What are my options, I'm new at diagnosing electrical problems. Thank you.
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 raycow
DECEASED
Posts: 27999
Loc: San Francisco, CA
Reg: 11-26-02
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01-03-16 03:13 AM - Post#2599626
In response to Robbob4
Do you have a stock alternator, which is externally regulated, or has it been replaced with an internally regulated alternator?
Did this problem develop all by itself, or did it follow some kind of work you did on the car, or did the problem already exist when you bought the car?
Ray
| Those who choose an automatic transmission want transportation. Those who choose a manual transmission want to drive. |
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Robbob4
Forum Newbie
Posts: 2
Reg: 01-02-16
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01-10-16 12:57 AM - Post#2601034
In response to raycow
The problem existed when i bought it. It looks like it could be the original alt, 2 wire plug with a seperate hot.
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acardon
Ultra Senior Member
Posts: 11504
Loc: DFW TEXAS
Reg: 03-25-05
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01-10-16 08:13 AM - Post#2601075
In response to Robbob4
Take it off and take it to a auto parts store that tests them. It could be the alternator or the regulator.
Don
66 Corvair (driving)
57 2dr HT (driving)
56 2dr HT (waiting to be restored)
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raycow
DECEASED
Posts: 27999
Loc: San Francisco, CA
Reg: 11-26-02
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01-10-16 01:05 PM - Post#2601155
In response to Robbob4
....2 wire plug with a seperate hot.
Both alternator types use a 2 wire plug. Look at the orientation of the blade contacts. If they are side by side like a wall outlet in a house, the alt is externally regulated. If they are in line with each other, it is internally regulated.
Ray
| Those who choose an automatic transmission want transportation. Those who choose a manual transmission want to drive. |
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0utlaw
Very Senior Member
Posts: 2794
Loc: US East Coast
Reg: 09-10-02
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01-10-16 01:54 PM - Post#2601166
In response to raycow
While you are on this....
Just a quick question. I changed my 2 wire external reg alt on my 70 Chevy pickup to an internal regulated alternator...because I think they are better and I opted for more amperage.
Some folks say tie the two alternator terminals together and supply that with a key on wire with a diode to turn it on so it doesn't back feed. Could not find any EXACT info on the web. Thanks in advance. OUTLAW
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acardon
Ultra Senior Member
Posts: 11504
Loc: DFW TEXAS
Reg: 03-25-05
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01-10-16 02:02 PM - Post#2601167
In response to 0utlaw
Here's a diagram to convert ext. to int. alt.
Link to diagram.
Don
66 Corvair (driving)
57 2dr HT (driving)
56 2dr HT (waiting to be restored)
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0utlaw
Very Senior Member
Posts: 2794
Loc: US East Coast
Reg: 09-10-02
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01-10-16 04:46 PM - Post#2601201
In response to acardon
Thank acardon. Really appreciate it!
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