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04-16-2016, 10:30 AM
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#1 |
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Registered User
Join Date: Sep 2014
Location: The Dalles OR
Posts: 123
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Electric problem
I put a new battery in when I bought the truck, work fine till lately. I changed bad fuse now battery drains all the juice out of the battery when it sets over night cant figure it out.
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04-16-2016, 10:34 AM
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#2 |
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Registered User
Join Date: Dec 2004
Location: Highland, IN
Posts: 2,326
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Re: Electric problem
Turn the lights out in garage. Pull battery cable off. Touch it to the battery. If it sparks you have a load. Pull the fuses out one by one and Check the spark on the battery. Do this until no spark. That circuit has your draw
__________________
Chris _______________________________ 1979 Chevy Stepside SPORT 2018 Chevy Silverado, 39 years apart  My build 2008-2016. http://m.imgur.com/a/bURrE |
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04-16-2016, 10:36 AM
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#3 |
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Moderator
 
Join Date: Oct 2008
Location: Wentworth, NH
Posts: 4,977
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Re: Electric problem
I usually pull all the fuses and put em back in one at a time... Easier to keep track of which ones you haven't tested yet.
I also usually use a meter between the battery and the ground cable. Use the 10A fused test lead port on the meter. Set it for DC Amps. A reading over 0.025 Amps (25 ma) is way too much. On these trucks background draw should be closer to 10ma or even less. http://www.wikihow.com/Find-a-Parasitic-Battery-Drain
__________________
1959 M35A2 LDT465-1D SOLD 1967 Dodge W200 B383, NP420/NP201 SOLD 1969 Dodge Polara 500 B383, A833 SOLD 1972 Ford F250 FE390, NP435/NP205 SOLD 1976 Chevy K20, 6.5L, NV4500/NP208 SOLD 1986 M1008 CUCV SOLD 2000 GMC C2500, TD6.5L, NV4500 2005 Chevy Silverado LS 2500HD 6.0L 4L80E/NP263 2009 Impala SS LS4 V8 RTFM... GM Parts Books, GM Schematics, GM service manuals, and GM training materials...
And please let us know if and how your repairs were successful. Last edited by hatzie; 04-16-2016 at 10:48 AM. |
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04-16-2016, 10:50 AM
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#4 |
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Registered User
Join Date: Dec 2014
Location: Northern California
Posts: 422
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Re: Electric problem
What does the bad fuse control? Something caused it to blow. Pull out the fuse you replaced and leave it empty. If the battery stops draining, then you now know where you need to start looking.
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04-16-2016, 11:25 AM
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#5 | |
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Registered User
Join Date: Sep 2014
Location: The Dalles OR
Posts: 123
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Re: Electric problem
Quote:
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04-16-2016, 11:37 AM
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#6 |
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Registered User
Join Date: Dec 2014
Location: Northern California
Posts: 422
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Re: Electric problem
That's the circuit I would start checking out first.
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04-16-2016, 11:43 AM
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#7 |
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Moderator
Join Date: Oct 2008
Location: Wentworth, NH
Posts: 4,977
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Re: Electric problem
What's the fuse marked?
What year is your truck? Depending on the year there can be a fuse for the running lamps and a different fuse for the brake lamp circuit. Several other circuits share those fuses depending on what year you have.
__________________
1959 M35A2 LDT465-1D SOLD 1967 Dodge W200 B383, NP420/NP201 SOLD 1969 Dodge Polara 500 B383, A833 SOLD 1972 Ford F250 FE390, NP435/NP205 SOLD 1976 Chevy K20, 6.5L, NV4500/NP208 SOLD 1986 M1008 CUCV SOLD 2000 GMC C2500, TD6.5L, NV4500 2005 Chevy Silverado LS 2500HD 6.0L 4L80E/NP263 2009 Impala SS LS4 V8 RTFM... GM Parts Books, GM Schematics, GM service manuals, and GM training materials...
And please let us know if and how your repairs were successful. |
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04-17-2016, 11:08 AM
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#8 |
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Registered User
Join Date: Sep 2014
Location: The Dalles OR
Posts: 123
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Re: Electric problem
Found the problem it was the blower resistor on the heater I want to thank every body for their help Jim.
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04-17-2016, 11:39 AM
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#9 |
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Registered User
Join Date: Oct 2015
Location: Ottawa, Ontario, Canada
Posts: 766
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Re: Electric problem
Good find, glad you got it working. Thanks for let ever one know the fix.
__________________
 1977 REG cab Long Bed with a 1984 Front Clip, 82 305 .60 over 9.0.1 flat top pistons, 4bbl, TH350, w/84 SS-intake & cam , w/ 1977 big block rad, 1975 gear box, 1984 master w/ metric fittings top & SAE fitting @ portion block, 1975 3.42 gear open diff. Duel 77-87 Factory air cleaner, duel inlet from rad support . Down sized 9' to new 8' Steel flat bedWas a 77 454 w/308 gear. Taken out 550 lbs. up front with motor clip change. |
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