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#1
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alternator current draw
I've been having this problem of my battery being killed and I figured out
that my alternator is drawing current when the car is off. It'll basicallly completely kill the battery overnight. I figured it out by pulling fuses and checking voltage at the battery. I finally got to the alternator and when I disconnected the two red wires bolted too it the voltage at the battery jumped back up to 12.40 from 12.19. I checked my other car and disconnecting the same wires didn't produce any change in the voltage. \ The alternator's fairly new. Does anyone have any ideas? Thanks, -Andrew |
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#2
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alternator current draw
DruG wrote:
> I've been having this problem of my battery being killed and I figured out > that my alternator is drawing current when the car is off. It'll basicallly > completely kill the battery overnight. > I figured it out by pulling fuses and checking voltage at the battery. I > finally got to the alternator and when I disconnected the two red wires > bolted too it the voltage at the battery jumped back up to 12.40 from 12.19. > I checked my other car and disconnecting the same wires didn't produce any > change in the voltage. \ > The alternator's fairly new. Does anyone have any ideas? > Thanks, > -Andrew > > You got a bad alternator. Specifically, the alternator that you got has a bad diode or two. If you replaced the alternator and then jump started the car with a dead battery, that might have killed it. Of course don't mention this when you take it back for a replacement. IMHO an alternator should be designed to charge a dead battery without going Tango Uniform, but obviously the manufacturers could care less what I think. nate -- replace "fly" with "com" to reply. http://home.comcast.net/~njnagel |
#3
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alternator current draw
Shorted diode. Could be that it still produces a voltage of about 12V (14 is
normal). SFC "DruG" > schreef in bericht ... > I've been having this problem of my battery being killed and I figured out > that my alternator is drawing current when the car is off. It'll > basicallly completely kill the battery overnight. > I figured it out by pulling fuses and checking voltage at the battery. I > finally got to the alternator and when I disconnected the two red wires > bolted too it the voltage at the battery jumped back up to 12.40 from > 12.19. I checked my other car and disconnecting the same wires didn't > produce any change in the voltage. \ > The alternator's fairly new. Does anyone have any ideas? > Thanks, > -Andrew > |
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