Bad alternator regulator, 18v electrical shutting down? Help

[zrain25]

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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[zrain25]

Also my alternator is hot to the touch. Truck was only on for 4 min


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[mthomas9015]

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.

[zrain25]

So you think it is the regulator?


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[mthomas9015]

I'd say but get it tested a part store can tell you if its over powering eather way its gota come out.

[GAS]

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.

[JSchuricht]

Don't risk killing your electronics, replace the alternator before you run it again.

[zrain25]

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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[zrain25]

Ohh and my old alternator failed both test,


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