Bob Bailin wrote:
>
> "leftoverair" <exposezure@yahoo.com> wrote in message
> news:97115a09-a6c1-4999-afd6-74e4c72016e2@c60g2000hsf.googlegroups.com...
>> hello good people-
>>
>> after 30mi of highway driving the gages ceased to work, followed by
>> the engine hesitating/bucking then stalling. 20mins later she started
>> up & i made it home. the next day this happened three other times
>> while only driving several miles.
>>
>> here's the low down:
>> -old battery was tested at 12v during idle w/ no load. (haven't tested
>> new battery)
>> -alternator tested at 15v at local auto parts store.
>> -fusible link is still flexible. (not sure what reading i should be
>> getting with volt meter)
>>
>> aside from checking/cleaning ground wire on the engine, i'm not sure
>> what else to do.
>>
>> i would really appreciate input from the gurus out there.
>>
>> thanks!
>
> Battery should test at least 14 volts at idle. If you read 12V at idle,
> your alternator is shot, despite it testing good at the local parts store.
>
> My alternator failed in August, the first replacement was bad, too.
> The 2nd replacement was ok. Both the original and the 1st replacement
> tested just fine at the local Auto Zone, and the guy followed the test
> procedure precisely.
>
> When the system voltage drops below 11.5 volts, everything starts
> acting weird, starting with the instrument cluster & radio. The best
> thing to is to shut off everything electrical, including the headlights
> if possible, and limp home fast as possible. With a strong enough
> battery, there's enough reserve to restart a warm engine after a short
> recovery period.
>
> Clean the battery posts and cables, making sure to check for crap
> under the plastic shields. The ends are easily replaceable if they're
> badly corroded. Also check the B+ connection on the back of the
> alternator for a good connection.
>
> If, after cleaning, the voltage measured at idle at the battery is still
> less than 14V, replace the alternator.
>
> Bob
Hi,
Tests fine when cold. Goes bad when gewtting hot. Typical heat related
problem. Sounds like alternator is going South, alright!