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Old 04-04-2016, 01:42 PM
it-broke-again it-broke-again is offline
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Default I changed the alternator and that's where it started

I have a 2002 ford ranger 4.0l 4x4 auto trans and it ran great until the other day when the battery light came on and later it would not start. I tested it with a voltage meter after I jump started it with my car and the voltage was bouncing between 11v and 15.8v. so I figured the voltage regulator in the alternator had went bad and bought another alternator to replace it only to find out that now its not charging at all. I took the replacement back and swapped it as if defective and still got the same results. I have a full 12 v running to the alternator post at all times, the yellow/white wire running to the regulator has a full 12v at all times, the white/black wire I tested for resistance between the connections and got none but the light green/red wire is only getting like 1.4v is this normal? and if so can someone please tell me what I'm missing here. I'm at a loss and don't want to have to dump a whole bunch of money into a shop because its not the best looking truck to say the least
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Old 04-04-2016, 02:17 PM
damned225 damned225 is offline
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Default

Have you checked the battery cables? How's the battery? Is everything plug in, or tight?
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Old 04-04-2016, 02:26 PM
it-broke-again it-broke-again is offline
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Default Re: I changed the alternator and that's where it started

All connections are right and tight I've measured resistance in all wires battery is a good one out of my other ranger
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Old 04-04-2016, 06:19 PM
smokinAMD smokinAMD is offline
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Default Re: I changed the alternator and that's where it started

Check for a blown fuse.
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Old 04-05-2016, 03:04 AM
it-broke-again it-broke-again is offline
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Default Re: I changed the alternator and that's where it started

I have checked all fuses 3 times none are blown
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Old 04-08-2016, 05:47 PM
dvrich dvrich is offline
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Default Re: I changed the alternator and that's where it started

Quote:
Originally Posted by it-broke-again View Post
I have checked all fuses 3 times none are blown

Did you check the fusible links in the wiring by the battery?
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Old 04-08-2016, 06:05 PM
EaOutlaw1969 EaOutlaw1969 is offline
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Default Re: I changed the alternator and that's where it started

Have the battery load tested. a dead cell can cause this.
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Old 04-08-2016, 08:23 PM
it-broke-again it-broke-again is offline
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Default Re: I changed the alternator and that's where it started

I finally got a break in the weather long enough to Mess with it and after I replaced the connector I ended up having to jump the yellow wire to the voltage regulator to get it to charge. have yet to look into the yellow wire but I have it running off of a inline fuse holder and some wire leading to the battery

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