Alternator Problem I Think?

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Jun 28, 2004 | 11:36 AM

#1

coreycgate

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Alternator Problem I Think?

I've got a 77 Ford with 302. Alternator Charges with the truck running. My Question is: Can the Alternator drain the battery when the engine is not running? There is a wire running from the alternator to the solenoid. I am pretty sure its the wire that charges the battery. It seems to pull a load on the battery when the truck is off.

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Jun 28, 2004 | 11:40 AM

#2

pdqford

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From: Central NYS

Quote:

Originally Posted by coreycgate

I've got a 77 Ford with 302. Alternator Charges with the truck running. My Question is: Can the Alternator drain the battery when the engine is not running?

Yes. A bad diode in an alternator can drain a battery.

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Jun 28, 2004 | 12:32 PM

#3

dfisher1

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From: Gainesville, FL

Corey,
More than likely, the voltage regulator causes the drain.
This is a problem I've seen from time to time.
Good Luck,
KingFisher

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Jun 28, 2004 | 01:29 PM

#4

coreycgate

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Thanks, I'll take it by my local alternator shop today to get checked out.

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