charging issue
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Senior User
Joined: Mar 2007
Posts: 123
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From: Jacksonville MD
charging issue
Alright so here's the run down. My truck has been running funny and it seemed like it was the ficm went bad again. So i called up the shop because its been less then a year. So i bring it in told the guy what its been doing, so he hooked it up to his laptop did test on everything even checked the vein's on the turbo and all, as im standing there watching him and asking questions. The only problem he found was that the charging system was putting out 13 volts and not able to throw a code yet to figure out which alternator is going bad or if both are going bad. Then one day after i figured out,, every time i turned my headlights on the truck lost all power as if the ficm wasn't getting enough volts to it. So i took out the HID's put in my old bulbs and not a problem.
How can i check which alternator is bad. Voltage wise one is putting out 13.6 and the other 13.5. (This is with my old bulbs in not the HID) and batteries are good less then a year old also.
How can i check which alternator is bad. Voltage wise one is putting out 13.6 and the other 13.5. (This is with my old bulbs in not the HID) and batteries are good less then a year old also.
Hotshot
Joined: Jul 2005
Posts: 13,834
Likes: 25
From: Middle Tn.
Alright so here's the run down. My truck has been running funny and it seemed like it was the ficm went bad again. So i called up the shop because its been less then a year. So i bring it in told the guy what its been doing, so he hooked it up to his laptop did test on everything even checked the vein's on the turbo and all, as im standing there watching him and asking questions. The only problem he found was that the charging system was putting out 13 volts and not able to throw a code yet to figure out which alternator is going bad or if both are going bad. Then one day after i figured out,, every time i turned my headlights on the truck lost all power as if the ficm wasn't getting enough volts to it. So i took out the HID's put in my old bulbs and not a problem.
How can i check which alternator is bad. Voltage wise one is putting out 13.6 and the other 13.5. (This is with my old bulbs in not the HID) and batteries are good less then a year old also.
How can i check which alternator is bad. Voltage wise one is putting out 13.6 and the other 13.5. (This is with my old bulbs in not the HID) and batteries are good less then a year old also.
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