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[ 4 posts ] |
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What's your voltage with 4g alternator?
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cpldavis37
Official CCB Member
Joined: Sun Oct 16, 2011 7:45 pm Posts: 357 Location: Thornton, Co
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What's your voltage with 4g alternator?
I start out at 13.5ish and when I start turning on the fan, lights, radio ect... it drops below 12.5 or lower. I did a test with my scanner with the obd2. It said 13.21. The alternator is a rebuild from autozone. It has been this way sense the first start in January. When I let it sit it is always at 13.5ish when I start it. I have taurus fan and that takes .5 volts as soon as I turn it on and it never kick back up.
I was thinking bad regulator, but ????
What voltage is everyone else getting out of these 4g alternators?
_________________ TJ "Everyone suspects himself of at least one of the cardinal virtues, and this is mine: I am one of the few honest people I have ever known." F. Scott Fitzgerald 1974 Ford Bronco 3 1/2 inch James Duff lift ,2 inch body lift, 351w Explorer EFI, Viper built c4, Viper built Dana 20 with wildhorses twin stick, Kinder built Dana 44 with 4.56 gears disc brakes aussie locker and knuckle over conversion, Kinder built 9 inch with grizzly locker 31 spline axles and 4.56 gear
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Sun Jul 22, 2018 2:23 pm |
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ZOSO
Moderator
Joined: Mon Nov 15, 2010 5:58 pm Posts: 3906 Location: Henderson, Co
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Re: What's your voltage with 4g alternator?
I am seeing 14v no matter what I have on and running. Even with the taurus fan it stayed at 14v. But I had mine built by a buddy in loveland. It is a 200amp alternator.
_________________ Rob
74 Ranger EFI351w, 4r70w, ARB 5.13 9in, ARB 5.13D44, and a bunch of other goodies. Best of all the family memories.
04 Mustang Cobra, KenneBell 2.2 feeding a lot of boost on E85. Tire shredding machine
New project: 77 Bronco Ranger, body work and more body work.
Very little left of a 72 durango tan explorer sport
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Sun Jul 22, 2018 2:48 pm |
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landshark
Official CCB Member
Joined: Fri Oct 14, 2011 12:16 am Posts: 3942 Location: Denver, Wash Park Area
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Re: What's your voltage with 4g alternator?
You should always ideally see 14.4 volts if the alternator is charging. Any lower it’s possible you have belt slip or bad alternator. Reman won’t necessarily mean it’s good. Maybe take it back and try another or check your belt tension.
_________________ 1976 Bronco "Green, Yellow, whatever", 1969 Bronco "Red", 1972 Bronco Stocker "Kind of Blue/Grayish"
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Sun Jul 22, 2018 7:38 pm |
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cpldavis37
Official CCB Member
Joined: Sun Oct 16, 2011 7:45 pm Posts: 357 Location: Thornton, Co
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Re: What's your voltage with 4g alternator?
I went over to D&D72 (John)s house and looked at his. I dont have a 4 gauge wire hooked up. I'll hook 1 up tomorrow and see if that helps. I had to guess on the belt size because I added an ac delete pulley to the serpentine setup. Maybe its not the right 1.
_________________ TJ "Everyone suspects himself of at least one of the cardinal virtues, and this is mine: I am one of the few honest people I have ever known." F. Scott Fitzgerald 1974 Ford Bronco 3 1/2 inch James Duff lift ,2 inch body lift, 351w Explorer EFI, Viper built c4, Viper built Dana 20 with wildhorses twin stick, Kinder built Dana 44 with 4.56 gears disc brakes aussie locker and knuckle over conversion, Kinder built 9 inch with grizzly locker 31 spline axles and 4.56 gear
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Sun Jul 22, 2018 9:08 pm |
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