Question about 2004 Saturn ION
Battery reading low voltage changed new battery car wont start no power goimg to computer
It's difficult to tell what's going on from your question, your old battery appeared to have failed, so you replaced it? Did you check voltage while it was running? It should be more than 13 VDC, otherwise the battery will discharge, but it's not the fault of the battery, that would indicate a problem with the alternator and/or voltage regulator. There are 3 important voltage readings: running (13+), not running (12+) and while cranking (9+).
Are you saying that after replacing the battery everything is dead? I would check the battery cables and terminals, make sure the wire hasn't been stressed or compromised, and that the connectors are shiny-clean. (You can but a terminal cleaner, with wire brushes to clean the fittings both inside and out, for a few dollars.)
Also, it's uncommon, but there's no law that says a brand new battery can't be dead.
Posted on Apr 07, 2015
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Posted on Jan 02, 2017
My '95 SL2 purchased new, ate 6 (SIX) alternators, that fantastic "27 patents" automatic transmission, two sets of front disks and finally dropped a rod cap at 56,700 miles of very civilized driving.
I 'sold' it to my youngest son for $1 as a hobby when he got bored with his Jeeps or to donate it to a fund-raising bashing contest.
Now, the reason the alternators die -
They are buried in the engine compartment and get hardly any natural cooling there and, I don't know what kind of stupid engineers GM employs these days, but that alternator at 105 amps rating must deliver up to 1200 watts of 12 volt power an d it is too small to effectively dissipate the 1200 watts of sheer heat it produces while doing it.
If you have any appliance that absorbs 1200 watts (10 amps at 120 VAC), just check to see how much heat that is and even if spread over a larger area and bulk of the alternator, you think that would be a good environment for the semiconductors that are used to make the DC and regulate it.
It's a absolutely insane design and convinced me to never, EVER buy another anything from GM!
Sorry to vent but it still irks me after over 4 years of trouble-free Subaru ownership.
I wish you luck.
Posted on Aug 07, 2008
There is a inline fuseable link that runs from alternator to battery, check that first if ok it may be computer problem.
Posted on Jul 12, 2009
SOURCE: had car jumped, now it stalls when the air conditioner is turned on. alternator read ok. also changed battery but speedometer didn't work after jumpstart, it works with the new battery,but still
There is an idle speed control motor on the side of the car's throttle body that is supposed to keep the idle stable even when additional loads like the AC are on. It's possible the motor may be damaged due to a voltage spike when you had it jumped. It's also possible the AC system may be pulling the engine speed down due to an internal problem with a faulty AC compressor.
Did the shop that checked the charging system check to make sure alternator was charging properly with the additional loads of the AC, headlights and blower motor on? It's very possible the system is overloading a weak alternator.
Posted on Apr 21, 2013
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