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voltage regulator help UPDATE

Discussion in 'The Garage' started by johnnieg, Mar 1, 2004.

  1. johnnieg

    johnnieg 1/2 ton status

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    My volt gauge is all over the place. at startup, it somes right up to the red zone, and slowly comes back down. Whenever I rev it up or go from a stop, the gauge goes way up again and stays there. On decel, it starts spiking up to 18 volts /forums/images/graemlins/eek.gifand the lights and heater go berserk. I'm almost certain that it is the volt reg, but how easy is it to replace? Am I better off just getting a new alternator? I'm mechanically inclined, but what I don't have is time. Thanks /forums/images/graemlins/bow.gif
     
  2. HarryH3

    HarryH3 1 ton status Author

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    Re: voltage regulator help

    The quickest solution is to stop in at Autozone and pony up for one of their Duralast Gold rebuilds. They have a lifetime warranty. If you want cheap, stop down at A1, the pick-n-pull yard and find a similar alternator there. They're only like $15, but may or may not work for long. /forums/images/graemlins/wink.gif

    For more alternatives, check out www.alternatorparts.com
     
  3. dyeager535

    dyeager535 1 ton status Premium Member

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    Re: voltage regulator help

    Rebuild kit for the alternators is about $15, and extremely easy to do if you are moderately equipped and intelligent. Comes with regulator, diode trio, brushes, and I *think* the front bearing, which is the one that takes all of the load.

    Takes about an hour to do the first time I'd figure.

    Always make sure that the alternator IS putting out more than it should though. Test it with a voltmeter. Always a good idea to rule out gauge error first.
     
  4. johnnieg

    johnnieg 1/2 ton status

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    Re: voltage regulator help UPDATE

    On Monday I tore the alternator apart and replaced the voltage regulator. Everything else in there looked alright and now the problem is resolved /forums/images/graemlins/woot.gif Volts according to the gauge sit around 14-15 under all conditions. Hopefully the truck will stay working for a while. It turns 90,000 and all hell broke loose.
     
  5. dyeager535

    dyeager535 1 ton status Premium Member

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    Re: voltage regulator help UPDATE

    Glad to hear it. People seem to be afraid to tear into the alternator, not tough at all, was it?
     
  6. jakeslim

    jakeslim 1/2 ton status

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    Re: voltage regulator help UPDATE

    if i was to tear into an alternator, can i increase the amps easily?
     
  7. dyeager535

    dyeager535 1 ton status Premium Member

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    Re: voltage regulator help UPDATE

    No as I understand it, you actually need to change the hard parts to do this, and AFAIK, that stuff isn't readily available. Probably jsut a better bet to find an alternator that is rated higher in your case.
     

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