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Battery/alternator light on



 
 
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  #11  
Old March 12th 12, 05:47 PM posted to rec.autos.makers.honda
jim beam[_4_]
external usenet poster
 
Posts: 3,204
Default Battery/alternator light on

On 03/12/2012 08:11 AM, Fijoy wrote:
> On Mar 12, 9:22�am, > wrote:
>> > wrote in news:634568ae-6662-4b70-93c9-
>> :
>>
>>> Hi all,

>>
>>> The battery/alternator light came on when I was driving my 1991 Accord
>>> today morning. The light goes off when the rpm goes above a certain
>>> level: it was 2500rpm in the morning, but when I checked in the
>>> evening, it was 4000rpm. I replaced the battery a few months ago, so
>>> my first guess was that the alternator is failing, but when I read
>>> related posts on this group, I saw that it could be a bad voltage
>>> regulator, loose connections, slipping belt, etc. The belt and
>>> connections seem fine. How do I determine if it's the alternator or
>>> the voltage regulator?

>>
>> The voltage regulator is inside the alternator. For most people, the
>> alternator is a one-piece, replace-the-whole-thing item. Voltage-regulator
>> replacement is considered an "advanced" repair.
>>
>> It sounds like you may just have worn brushes, which is a very easy fix
>> that may be done without removing the alternator from the vehicle.
>>
>> Is this the original alternator that shipped with the car from the factory?
>>
>> --
>> Tegger

>
> My mechanic is checking to find out what the problem is. I asked him
> about the brushes, and he said that replacing the brushes will require
> rebuilding the alternator, which will cost almost the same as getting
> a new alternator, given the labor charges. Is he being reasonable?


yes. and with the rebuild, you get a warrantee. with brush
replacement, if he can even do it, and which can be accompanied by slip
ring wear, carbon accumulation and arcing, etc., you don't.


>
> Thanks,
> Fijoy



--
nomina rutrum rutrum
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  #12  
Old March 13th 12, 01:24 AM posted to rec.autos.makers.honda
Fijoy
external usenet poster
 
Posts: 12
Default Battery/alternator light on

On Mar 11, 9:19*pm, Fijoy > wrote:
> Hi all,
>
> The battery/alternator light came on when I was driving my 1991 Accord
> today morning. The light goes off when the rpm goes above a certain
> level: it was 2500rpm in the morning, but when I checked in the
> evening, it was 4000rpm. I replaced the battery a few months ago, so
> my first guess was that the alternator is failing, but when I read
> related posts on this group, I saw that it could be a bad voltage
> regulator, loose connections, slipping belt, etc. The belt and
> connections seem fine. How do I determine if it's the alternator or
> the voltage regulator?
>
> Thanks much,
> Fijoy


Thank you all for the responses. My mechanic confirmed that it was the
alternator. He found a used alternator did the replaced the whole
thing, for a total of $265. He said I should be good for ~2yrs with
that used one.
 




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