batteries dead

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Apr 30, 2009 | 10:01 AM

#16

vettdvr

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Quote:

Originally Posted by mattpowerstroker

thats what i figured but wouldnt i have had the batterie light or anything let me know that it was going.. what kind of brand should i go for with a new alternater.

If you have a failed diode in the alternator (1 of 3) it will put out 2/3 the normal. Given some inefficient frequent stop and starting it probably won't put enough power to quickly charge the batteries and end up low enough to not start.

The 2 of 3 diodes will sometimes not give you the light. If you have a scope you could see the output with a missing pulse.

Correct change the alternator. Brand. I use new OEM parts.

Apr 30, 2009 | 05:04 PM

#17

Visseroth

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Joined: Apr 2009

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From: Northern Idaho

Well I know what alternator I'm getting when it's time for replacement.

Anyhow, back to the subject at hand.

Apr 30, 2009 | 05:28 PM

#18

vettdvr

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If you have run your batteries down I highly recommend you leave all electrical not needed items off until your batteries have about 20 minutes to recharge. There is a risk on some alternators trying to full charge the run down batteries and full driver electrical load that alternators can overheat and fail. So just keep the a/c, radio etc off for about 20 minutes after start up to help out the alternator a bit.