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warning light is on and alternator is not charging the bat..

 
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ravindra

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Since: Jul 27, 2007
Posts: 1



(Msg. 1) Posted: Fri Jul 27, 2007 5:46 pm
Post subject: warning light is on and alternator is not charging the battery
Archived from groups: alt>autos>toyota>camry (more info?)

i have toyota camry 95 234k v6 north american it looks like alternator is
not charging the battery and car shaped warning light is always on what
could be the reason

ravi

 >> Stay informed about: warning light is on and alternator is not charging the bat.. 
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johngdole

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Since: May 31, 2007
Posts: 306



(Msg. 2) Posted: Sat Jul 28, 2007 1:21 am
Post subject: Re: warning light is on and alternator is not charging the battery [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)

If you still have the original alternator then you got pretty good use
out of it. And if you still have the original battery, likewise.

I personally change the battery every 5 years. No questions asked.
$39.99 (now $45) for a Johnson Controls at Walmart is a very good
deal. A weak battery strains the alternator and can cause it to fail.

I'd change out the alternator brush (the plastic assembly under the
rear cap) every 100,000 miles. There will be about 20% left, but why
chance it.

If the voltage regular goes out, then you should just replace it with
a rebuilt. I get rebult alternators from my local NAPA parts store
only. Dealer is overpriced and other major chains sometimes have cheap
blue light specials that I don't want.

If you have time, check out the Bosch NEW alternators:
http://www.boschautoparts.com/Products/AlternatorsandStarters/

And check out www.rockauto.com prices (plus shipping).


ravindra wrote:
> i have toyota camry 95 234k v6 north american it looks like alternator is
> not charging the battery and car shaped warning light is always on what
> could be the reason
>
> ravi

 >> Stay informed about: warning light is on and alternator is not charging the bat.. 
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mred

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Since: Jun 10, 2007
Posts: 53



(Msg. 3) Posted: Sat Jul 28, 2007 9:23 am
Post subject: Re: warning light is on and alternator is not charging the battery [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)

On Jul 28, 12:21 am, wrote:
> If you still have the original alternator then you got pretty good use
> out of it. And if you still have the original battery, likewise.
>
> I personally change the battery every 5 years. No questions asked.
> $39.99 (now $45) for a Johnson Controls at Walmart is a very good
> deal. A weak battery strains the alternator and can cause it to fail.
>
> I'd change out the alternator brush (the plastic assembly under the
> rear cap) every 100,000 miles. There will be about 20% left, but why
> chance it.
>
> If the voltage regular goes out, then you should just replace it with
> a rebuilt. I get rebult alternators from my local NAPA parts store
> only. Dealer is overpriced and other major chains sometimes have cheap
> blue light specials that I don't want.
>
> If you have time, check out the Bosch NEW alternators:http://www.boschautoparts.com/Products/AlternatorsandStarters/
>
> And check outwww.rockauto.comprices (plus shipping).
>
>
>
> ravindra wrote:
> > i have toyota camry 95 234k v6 north american it looks like alternator is
> > not charging the battery and car shaped warning light is always on what
> > could be the reason
>
> > ravi- Hide quoted text -
>
> - Show quoted text -

"I personally change the battery every 5 years. No questions asked.
$39.99 (now $45) for a Johnson Controls at Walmart is a very good
deal. A weak battery strains the alternator and can cause it to fail.
"


"I'd change out the alternator ."

You are 100% correct on this.Had this happen to me twice.(Ya I know ,
slow learner LOL) but had never had this happen on a NA car only on my
Jap. cars.

I dont know why the discrepancy?

If you replace the battery ? try and replace it with one of the new
design maintenance free ones,.they are practically indestructible.

I have one in my `01 750 Shadow Ace (original) and I have one in my
`02 Camry.

Neither one (so far ) show any signs of failure.

Of course I maintain them like everyone should

Disconnect them once a year and clean the connectors and terminals
till they`re squeeky clean and then reconnect.(even if they LOOK
good).

Pretty simple really , no liquid to check in maintenance free
batteries.

Hope this helps ?
mred
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johngdole

External


Since: May 31, 2007
Posts: 306



(Msg. 4) Posted: Sat Jul 28, 2007 2:25 pm
Post subject: Re: warning light is on and alternator is not charging the battery [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)

Yes, I'd absolutely go for the AC-Delco maintenance-free batteries.
GMs and Hondas come with these. But not all Toyotas do. These have
different plate metallurgy that cuts down on hydrogen out gassing. And
they sure seem to last forever. These I'm comfortable to leave in for
7-8 years vs the 5 for standard batteries. That way only $20 brushes
around 100,000 miles is needed until the alternator bearings dry up.

Why do I swap them out before batteries fail? Because a battery is
relatively cheap compared to an alternator. A strained alternator
charging a weak battery overheats it and shortens its life. And then
people got into a cycle of replacing the battery, after the
alternator, after another battery, etc.....

IMO, ~$80 AC-Delcos are the best-in-class maintenance free batteries,
but the 24F is very hard to find. So I pick the next best - Johnson
Controls, available under many brands such as Walmart, AutoZone, etc.
Just don't get the blue light specials at any place because there are
different grades for different shopping levels.



On Jul 28, 5:23 am, mred wrote:
> If you replace the battery ? try and replace it with one of the new
> design maintenance free ones,.they are practically indestructible.
>
> I have one in my `01 750 Shadow Ace (original) and I have one in my
> `02 Camry.
>
> Neither one (so far ) show any signs of failure.
>
> Of course I maintain them like everyone should
>
> Disconnect them once a year and clean the connectors and terminals
> till they`re squeeky clean and then reconnect.(even if they LOOK
> good).
>
> Pretty simple really , no liquid to check in maintenance free
> batteries.
>
> Hope this helps ?
> mred
 >> Stay informed about: warning light is on and alternator is not charging the bat.. 
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Jason James

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Since: May 15, 2007
Posts: 22



(Msg. 5) Posted: Sat Jul 28, 2007 2:37 pm
Post subject: Re: warning light is on and alternator is not charging the battery [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)

"ravindra" wrote in message

> i have toyota camry 95 234k v6 north american it looks like alternator is
> not charging the battery and car shaped warning light is always on what
> could be the reason

Make sure the alternator drive belt is tight.

Is the battery going flat? if so:
Alternators dont last forever. It maybe a number of things with the most
common at that mileage being brushes worn beyond useable length. This is
replaced as an integral part of the regulator module which is the black
plastic thing on the rear of the thing (about $20-30). Other causes maybe
blown power-diodes, broken winding in the rotor or field.

If the battery is holding up:

If so, one or more of the output sensing diodes inside the alt maybe
stuffed.

Heres a link for a more complete understanding:

http://www.familycar.com/Classroom/charging.htm

Usually, these days, exchange alternators are reasonabley cheap (circa
$100), but I would try the regulator module first, or get it quoted on by an
auto-electrician,..one you trust.

Jason
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