Question about 1984 Oldsmobile Cutlass
The light will come on if the system is over charging. No system I know of charges at 18 volts. That is way too much. You need to have the alternator checked out. Most system charge at 14.5 to 15 volts at the most. You will burn out something major if not fixed. you can go by most auto part stores and they will check it out for free.
Posted on Dec 29, 2010
Your voltage regulator has failed. It is part of the alternator. If you are real handy you could take the alternator apart and replace it. If it was me, I'd just replace the whole alternator because if the voltage regulator is bad, chances are that the alternator isn't far behind. Do it soon because you will overheat the battery by over charging it and it could potentially explode.
Posted on Dec 29, 2010
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Posted on Jan 02, 2017
SOURCE: low volts light stays on
new altenator or junkyard one.if new return it, if junkyard just ignore light as its odds on they will not change it .the red light is caused by the difference in the voltage between input and output voltages .Quick test --start engine and run at 1500rpm disconnect battery and turn everything electrical on and if engine stops then change altenator if it stays running then altenator is OK
Posted on Jan 17, 2009
SOURCE: 2000 Windstar no charge light
Check all connections to alt. and battery to make sure they are clean and tight, as it sounds like a loose or dirty connection someplace. Possibly something not tightened completely after battery and alt. replaced? (just enough to get the annoying light to go on occasionally)
Posted on Jul 29, 2009
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