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Garrett
Dodge Dakota
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4/14/2008
19:22:31

Subject: Battery voltage meter
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I have a question. when i was driving on the freeway my battery meter peged to redline and i was not doing anything. does anyone have any idea what can cause this?
thank you in advance
Garrett
00 4.7lt SLT pls 2wd cc



Lee
Dodge Dakota
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4/15/2008
12:14:08

RE: Battery voltage meter
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Two things come to mind:

1. Faulty voltage regulator in the alternator

2. Faulty battery voltage meter

Did the reading go back to normal, or did it stay pegged? Try turning the ignition switch to the ON position without starting the engine and see if you get ~12VDC or if it pegs again. If it pegs again, I would suspect the gauge. Check the battery with your hand held volt metwe. If it's 12VDC, start the engine and see if it pegs. If it does, confirm the reading with your hand held volt meter at the battery itself. If the meter is intermittently getting pegged and the reading is correct, your alternator is probably going bad, and it could damage the battery and several other electrical devices.

Lee



Kowalski
GenIII
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4/15/2008
15:54:26

RE: Battery voltage meter
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Isn't that voltage regulator in the PCM ?
One more possibility I can think of - I've seen a bad engine ground strap cause an overcharging problem in an older GM, not sure if it could also do that for an '00 mopar or not.

Lead, follow, or get out of the way

Bucket
GenII
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4/15/2008
16:49:57

RE: Battery voltage meter
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Kowalski !!! this is getting ridiculous,its official you now have successfully answered every single post on this entire site.....OK wait let me guess ......A-your retired...B-you carry your laptop to work and its slow time at the job....C- your website " WWW.Kowalski knows all.com" is not completed yet so your still in this site or D- you actually own this site and we just dont know it. now which is it ????

Just kiddin buddy !!



Lee
Dodge Dakota
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4/15/2008
16:53:13

RE: Battery voltage meter
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"Isn't that voltage regulator in the PCM ?"

I would bet that you're right! I mainly work on air cooled VWs, so my knowledge of other cars is limited. This group has been extremely helpful to me! Thanks for the correction. Also thanks for the tip on the engine ground strap. One more thing to check when this sort of thing happens!

Lee





Kowalski
GenIII
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4/15/2008
18:42:50

RE: Battery voltage meter
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Bucket - thanks for the acknowledgement. This site is a way for me to wind down after work and learn about my truck. There's some others here that contribute quite a bit too, and have taught me a lot. Still a few years away from "A" ! I think "daddio" is more helpful on a lot of stuff; there's a lot of guys here who deserve credit. Hopefully Garret will figure out his problem. See you in the funny papers !

Lead, follow, or get out of the way

garrett
Dodge Dakota
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4/16/2008
14:25:36

RE: Battery voltage meter
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Thanks for the input guys. i just had to take it down to the dealership. i don't think they know completly what happened but i got it flashed. i know the killer flash. but it works great now, no problems yet with it. but yes i will keep an eye on the alternator.
Thanks again
Garrett



daddio
Dodge Dakota
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4/16/2008
15:04:02

RE: Battery voltage meter
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thanks for the kind words Kowalski. somedays i just have a lot of free time on my hands. and i don't think i'll ever be "A". LOL



Kowalski
GenIII
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4/16/2008
15:33:11

RE: Battery voltage meter
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Daddio - yeah, me neither; at least not one of those people who can't find anything to do after they're done with their regular job !

Garret - not all flashes are the killer flash. Just those that retard ignition timing.

Lead, follow, or get out of the way

BMac
Dodge Dakota
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4/16/2008
16:13:00

RE: Battery voltage meter
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YES, your alternator just took a dump!
It happened to me in my '89. The lights went very bright and I had to load the system to keep from burning things out.
The regulator is in the computer. I got a rebuilt alternator with the regulator built in instead of buying a new computer (PCM).

B~



Bucket
GenII
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4/16/2008
18:56:32

RE: Battery voltage meter
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Thats the cool thing about this place is that the regulars like you and daddio,obio3,walt and the otherbill,are there to help out.......THANKS GUYS !!!!



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