1996 impala ss alternator fix
1996 impala ss alternator fix I think the alternator in my 1996 impala ss is dead and needs fixing and that why when i install a new battery it will be drained after 2 weeks of the install.
any one knows how to test the rectifier, the internal voltage regulator, brushes and brushes holder and the 2 bearings?
thanks for help.
any one knows how to test the rectifier, the internal voltage regulator, brushes and brushes holder and the 2 bearings?
thanks for help.
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Joined: Jul 2007
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From: Wilmington, De
If the alternator is dead-dead, the battery would be drained after 15 minutes of driving.
It is possible that it has developed an internal short, causing the battery to drain after two weeks.
It is possible that it has developed an internal short, causing the battery to drain after two weeks.
Have you made sure you don't have a parasitic drain as suggested in your last thread about this? Take a volt meter and test from the charge post on the alternator and ground source and see what voltage it reads. Should be a steady reading of about 14.5 volts give or take a tenth or two.
OK, I will take the voltage reading while car is running tomorrow. the battery is recharged but it may not turn on the car and I'm out of money now, if the car didn't turn on I will have to buy a new battery. actually I can't buy a new battery now, I'm out of money now. my salary will be in my account after 5 days so then I will buy the new battery after 5 days.
thanks for help.
thanks for help.
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I managed to turn the car on with the recharged battery. the voltage at the battery terminals with the car not running is 12.6 v and the voltage with car running is 14.3 v, looks OK? correct? , I'm realy confused and I can't understand why the battery is getting drained after 2 weeks of sitting.
the regular car can sit for 6 months with a fresh battery and then the battery will get drained not 2 weeks.
I tried pulling fuses but the amperage was even 0.00 amps even less than the 0.02 amps that is OK.
now it is more than 2 months with this situation,
the thing is vague to me I don't know what to do?
please
the regular car can sit for 6 months with a fresh battery and then the battery will get drained not 2 weeks.
I tried pulling fuses but the amperage was even 0.00 amps even less than the 0.02 amps that is OK.
now it is more than 2 months with this situation,
the thing is vague to me I don't know what to do?
please
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Verdad Gallardo Have you made sure you don't have a parasitic drain as suggested in your last thread about this? Take a volt meter and test from the charge post on the alternator and ground source and see what voltage it reads. Should be a steady reading of about 14.5 volts give or take a tenth or two.
please help.
my battery that i used for the impala is an AC Delco 78A-72.
Last edited by Abdullah; Oct 28, 2016 at 10:11 AM.
oh and the electrical plug connector that plugs into the alternator was broken when i inserted into the alternator because it is old, do you know where can i get a good plug connector?
I talked to the Chevrolet dealer today and he told me the battery for my impala is AC Delco 74-60 maybe because the LT1 cars from 1994 to 1996 that was imported to Kuwait by the dealer that some of them were running with out O2 sensors and all of them were running on open loop (PCM), there is no closed loop for these cars at that time.
tomorrow I will get that battery and check, hope it is not an internal short.
thanks for help.
TECH Veteran
Joined: Apr 2008
Posts: 4,985
Likes: 112
I talked to the Chevrolet dealer today and he told me the battery for my impala is AC Delco 74-60 maybe because the LT1 cars from 1994 to 1996 that was imported to Kuwait by the dealer that some of them were running with out O2 sensors and all of them were running on open loop (PCM), there is no closed loop for these cars at that time.
.
.
you can use any battery brand you want. Unless the export Impala used a different series battery, a 78 series from any brand would work
hope the 74-60 battery will last a good time better than the 78A-72 battery.
Last edited by Abdullah; Oct 28, 2016 at 10:15 AM.
TECH Veteran
Joined: Apr 2008
Posts: 4,985
Likes: 112
I believe the 74 series may be a smaller, less cold cranking amp, battery than the 78 series. It should still work
the #'s after 74 or 78 like 60 or 72 mean what the rated lifespan of the battery is (60 months or 72 months)
if your battery is dieing a few weeks after no use there is likely a parasitic drain from something on the car (hood/trunk light, glove box light, etc. or a short somewhere keeping a active circuit open drawing from the battery and killing it. Or your chargeing system is not working properly.
I believe you mentioned 14.3-14.6 VDC was what your meter said when car is running which is good/correct suggesting the charging system is functioning correctly
the #'s after 74 or 78 like 60 or 72 mean what the rated lifespan of the battery is (60 months or 72 months)
if your battery is dieing a few weeks after no use there is likely a parasitic drain from something on the car (hood/trunk light, glove box light, etc. or a short somewhere keeping a active circuit open drawing from the battery and killing it. Or your chargeing system is not working properly.
I believe you mentioned 14.3-14.6 VDC was what your meter said when car is running which is good/correct suggesting the charging system is functioning correctly
