Bad alternator regulator, 18v electrical shutting down? Help - Ford Powerstroke Diesel Forum
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Old 01-14-2012, 05:37 PM
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Bad alternator regulator, 18v electrical shutting down? Help

First off my truck since I got it I think had a bad alternator the lights would pulse, and today I went to start heading down the street my volts hit 18 and all the lights got brighter my puller gauges we're going crazy. And I went home immediately, is that the regulator going bad


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Old 01-14-2012, 05:50 PM
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Also my alternator is hot to the touch. Truck was only on for 4 min


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Old 01-14-2012, 05:51 PM
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I belive the regulator is built into the alternator unless you have a shop that rebuilds them you have to get a new one. I would take it off and run it up to a parts store to get it tested just to make shur. If its running 18V it could fry your PCM so I wouldn't move the truck.
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Old 01-14-2012, 06:26 PM
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So you think it is the regulator?


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Old 01-14-2012, 07:31 PM
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I'd say but get it tested a part store can tell you if its over powering eather way its gota come out.
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Old 01-14-2012, 07:32 PM
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The regulator is the one and only thing that would let the voltage get that high.
Fire, boiled batteries, are just a few of the problems that will result from overcharging.
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Old 01-14-2012, 10:59 PM
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Don't risk killing your electronics, replace the alternator before you run it again.
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Old 01-15-2012, 06:37 AM
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Just went to autozone got a new one for free, the guy before me put a duralast in it, I'm gunna get a good one if this one blows


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Old 01-15-2012, 06:38 AM
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Ohh and my old alternator failed both test,


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