Question about Isuzu Cars & Trucks
Alternator is overcharging the battery (reading greater than 16v)- need temp fix to stop battery from being fried.
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Posted on Jan 02, 2017
SOURCE: Alternator may be overcharging?
Yes It sounds like the voltage regulator inside the alternator has gone wide open .It can also ruin your battery and explode the battery.I would have it hooked up to a alternator tester and just to make sure it's not just your gauge.hope this helps
Posted on Jan 24, 2009
this can be caused by a shorted cell in the battery, has the battery tested? and clean the battery cable's, corrosion can also cause this condition.
Posted on Mar 27, 2009
Make sure the ground wire going out of the voltage regulator is grounded and the alternator ground is good.Check all ground wires to there are the ones that stop the over charging.Theres also is a small little capacitor that should bolt right next to the regulator that holds alot of the over charging..
Posted on Mar 30, 2009
It sounds as the voltage regulator which is built into the back of the alternator has stuck. Occaisionally this even happens on new ones. Would suggest taking the alternator back as it shoud be under warranty.
Posted on Jul 06, 2009
Most likely it is the voltage regulator that's going bad which allows overcharging. this is inside the alternator, so it most likely needs replacement. you could pull it out and take it in to most auto parts stores and they would check it to make sure.
Posted on Jul 06, 2009
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