I have had a very weird charging problem I cannot figure out.
Every once in awhile my truck would hard start or no start. Dead batteries. Jump start and truck would be fine for days, even weeks.
Then same thing again.
Never saw the charging light on the dash at all.
Jump started it once and threw a meter on it. 13.6+/- volts. I figured, alternator is ok.
Happened several more times. I changed alternator. Truck was fine for a few weeks.
NOW, I am beginning to see charging light on dash every once in awhile. Stays on for a few seconds at a time. Weird.
Load tested both batteries(Optima red tops bought new in 2009) Load test fine. Hmmmm. Ran temporary wire from alternator to battery to see if I had bad charging wire.
This morning, got in truck to move a trailer around. Charging light was on the whole time(10-15 minutes or so).
Shut truck off. No start. Batteries dead.
Jump started. Light still on. System not charging and no battery power at all and truck actually died from no power.
Jump started. Charging fine, no light!!!!!!!!! Truck never gave me another problem all day.
*** is going on???? Anybody got any ideas?
I have heard that something in the computer actually tells the alternator to charge or not charge? Any truth to that?
I am stumped
Every once in awhile my truck would hard start or no start. Dead batteries. Jump start and truck would be fine for days, even weeks.
Then same thing again.
Never saw the charging light on the dash at all.
Jump started it once and threw a meter on it. 13.6+/- volts. I figured, alternator is ok.
Happened several more times. I changed alternator. Truck was fine for a few weeks.
NOW, I am beginning to see charging light on dash every once in awhile. Stays on for a few seconds at a time. Weird.
Load tested both batteries(Optima red tops bought new in 2009) Load test fine. Hmmmm. Ran temporary wire from alternator to battery to see if I had bad charging wire.
This morning, got in truck to move a trailer around. Charging light was on the whole time(10-15 minutes or so).
Shut truck off. No start. Batteries dead.
Jump started. Light still on. System not charging and no battery power at all and truck actually died from no power.
Jump started. Charging fine, no light!!!!!!!!! Truck never gave me another problem all day.
*** is going on???? Anybody got any ideas?
I have heard that something in the computer actually tells the alternator to charge or not charge? Any truth to that?
I am stumped