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10-30-2010, 11:31 AM
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#1 |
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U.S. Army Green Beret Sniper
 
Join Date: Dec 2009
Location: Enterprise Alabama
Posts: 57
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Charging System
Hello everyone, got a problem with my charging on the truck. 12v from batt to alternator. This is a external voltage regulator which has 12v. Before you could advance the gas pedal and the alternator would pick it up and start charging. Could it be the wrong alternator pulley, too small of one? Right now whether it is at idle or above the alternator will not put out no more than what the battery voltage is. Should I just change the alternator to an internal soild state alternator? Thanks
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 "YOU CAN RUN AND YOU CAN HIDE, BUT YOU WILL JUST DIE TIRED"
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10-30-2010, 11:58 AM
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#2 |
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Old member
Join Date: Jan 2002
Location: Liberty, & Garden City S.C. , U.S.
Posts: 19,936
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Re: Charging System
Best investment you will do to the truck for long term use.
If the truck is a everyday driver it needs the internal alternator for sure.  
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1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs. |
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10-30-2010, 12:09 PM
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#3 |
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Eat, Sleep, Drive a Chevy
Join Date: Apr 2010
Location: the town of the cow, Texas
Posts: 1,152
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Re: Charging System
There is a way to test the charging system and determine if the problem is the voltage regulator or the alternator, however if you do have a bad part (whichever one) and you arent dead set on keeping it original I would install a one wire alternator and be done with it. You should be able to get one for around $60.00
good luck
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Trey Silence may be Golden, but Duct Tape is Silver! 72 Short Step 57 "big window" short step |
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10-30-2010, 12:28 PM
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#4 |
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Registered User
Join Date: Oct 2007
Location: Spanaway
Posts: 8,451
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Re: Charging System
Heres a couple good threads on alternator conversion, there is also an article in the FAQ section. As posted unless your going for an "origional" truck there is no reason not to convert to an internally regulated alternator. If you convert to a 3 wire then the pic in post 22 ( bottom link i posted below) shows the mod to the wires going to the external regulater harness plug. Both the 1 wire and 3 wire work but there are some discussions on these boards and links posted as to why a 3 wire is better..
http://67-72chevytrucks.com/vboard/s...d.php?t=417872 http://67-72chevytrucks.com/vboard/index.php Post 22. http://67-72chevytrucks.com/vboard/s...3&postcount=22
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Mike. Swamp Rat build thread : http://67-72chevytrucks.com/vboard/s...d.php?t=595019 72 3/4T 4X4 4" BDS Lift 33" BFG's |
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10-30-2010, 12:34 PM
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#5 |
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Registered User
Join Date: Jun 2010
Location: Upland Ca
Posts: 4,142
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Re: Charging System
You said before, did this non charging start with some component change or just out of the blue? If out of the blue, you can take your alt to any auto store and have it teated. If it's putting out voltage your regulator is bad. Right now, assuming your gage is right, you have a failed alt or voltage regulator. I would first clean and reattach the battery cables and the connections at the alt and voltage regulator.
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1972 C10 SWB, Air, PS, PB, 350/350THM. Second owner. 1965 Corvette roadster, 44K miles, 327/365 SHP, 4 speed, side exhaust, knockoffs, teak, second owner (bought in 1970), Have ALL numbers matching components. My frame off restoration thread: http://67-72chevytrucks.com/vboard/s...d.php?t=556703 |
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Linear Mode
