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Author Topic: charging problems  (Read 4636 times)

Offline rroeder96

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charging problems
« on: October 30, 2010, 02:01:21 PM »
ok hers's the problem i put a new alternator and battery on the truck and im still not able to hold charge can anybody figure out what the problem is. If the truck sits for about 30 minutes it goes dead again if anybody can help i would love the imput. Thanks
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Offline VileZambonie

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Re: charging problems
« Reply #1 on: October 30, 2010, 02:46:23 PM »
What's the charging system output?
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Offline rroeder96

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Re: charging problems
« Reply #2 on: October 30, 2010, 03:01:42 PM »
im sure ive not had time to check cause i had to leave for work. What should it be up to while the truck is running..thanks
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Offline VileZambonie

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Re: charging problems
« Reply #3 on: October 30, 2010, 03:02:45 PM »
Run it at about 2,000 RPM with the headlights on. You should have at least 13.5Volts or higher
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Offline xCaliC10x

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Re: charging problems
« Reply #4 on: October 30, 2010, 06:29:37 PM »
So after 30 minuets of sitting, the battery is dead? I would say you have one huge parasitic draw. It should be easy to find if its that big.
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Offline rroeder96

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Re: charging problems
« Reply #5 on: October 30, 2010, 09:11:51 PM »
ok i left the charger on for 6 hours at 2amps and truck started fine ill let it sit for a while and see what happens if it dies again do you think i have a wire grounding out some where and if so is there a easy way to find it thanks...
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Offline VileZambonie

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Re: charging problems
« Reply #6 on: October 30, 2010, 10:39:19 PM »
One step at a time. Instead of guessing check the output voltage to make sure it's charging. If it is the next thing to do is check for a parasitic draw.
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Offline rroeder96

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Re: charging problems
« Reply #7 on: October 31, 2010, 02:23:44 PM »
ok i found the problem today come to find out the hood was hitting the new battery so problem solved thanks everybody...
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Offline xCaliC10x

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Re: charging problems
« Reply #8 on: October 31, 2010, 03:25:51 PM »
yup, a dead short, thats a parasitic draw.... of sorts.....
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'80 C10 short bed 350/SM465, Edelbrock carb/manifold/Elgin cam/custom headers/magnaflow, flip kit, spindles/springs.
'09 328i coupe sport package. Magnaflow exhaust.
'11 335d diesel 425ftlbs, 27-30MPG city, 40-44MPG hwy.

Offline rroeder96

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Re: charging problems
« Reply #9 on: October 31, 2010, 03:56:30 PM »
so i figured quick fix change the battery and be done thanks for all the help...
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Offline Lt.Del

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Re: charging problems
« Reply #10 on: October 31, 2010, 11:01:47 PM »
Holy sparks, batman!
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Offline Irish_Alley

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Re: charging problems
« Reply #11 on: November 01, 2010, 12:35:55 AM »
so you had a top post battery. was the hood getting hot
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Offline rroeder96

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Re: charging problems
« Reply #12 on: November 01, 2010, 02:00:21 PM »
no the hood never got hot but that was the only thing i changed from being able to make contact with anything i put a piece of rubber mat on the battery and truck worked fine so i assumed that was it but if there are anymore ideas i welcome them all thanks for the help....
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Offline Irish_Alley

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Re: charging problems
« Reply #13 on: November 01, 2010, 04:31:21 PM »
Do you have insulation on the top part of the hood if not any Burnt part of the hood from making contact. Is it top post?
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When you have eliminated the impossible, whatever remains, however improbable, must be the truth ~Sherlock Holmes

Offline rroeder96

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Re: charging problems
« Reply #14 on: November 01, 2010, 07:34:40 PM »
its top post and it has no burnt spots under the hood and no insalation...
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