Voltage Regulator Surges?

Discussion in '40- & 55-Series Tech' started by gmac, Nov 10, 2018 at 8:46 PM.

  1. gmac

    gmac

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    I have a question on voltage and overcharging the battery. This is for a 1982 FJ45 Troopy from Australia, and I had surges in electrical system. Every so often, my light would get brighter and the heater fan and wipers would start running faster (like really fast for the wipers, too fast). Also, this last July, I stopped and notice the battery boiling. I had a Repco OEX RGX2032 solid-state VR (square 6 wire connection) and just replaced with similar VR to a Transpo IN551 solid-state VR (but this one is a non branded unit). Installed it and this are the measurements I'm getting. Idle=14.9 to 15.0 volts. Idle with lights, heater, wipers and hazard lights on = 12.5V. Revved up to simulate cruising speed = 14.7 volts, revved up to simulate cruising speed with light, heater, wipers and hazard light on = 16.8 volts.
    Could it be that the new Voltage regulator is bad. Being that it is a generic brand, it would not surprise me.
    Could something else be causing the high voltage besides the voltage regulator? 14.9V to 15.0V at idle seems too high, as well as the 16.8 volts at cruising speed with all accessories on.

    Any thoughts?

    Thanks
    Guy

    gmac, Today
     
  2. 1969FJ

    1969FJ

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    Probably the alternator.
     
  3. RAGINGMATT

    RAGINGMATT Factory Focus-Point Mind-Set Approch..... Supporting Vendor

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    hi Guy ,



    did the issue just start recently
    or
    has it done it since u have owned the truck ?

    if yes to 2nd how long have u owned it , and or how long has the issues been a issue ?


    YES , aftermarket voltage regulators are Cheaply made & can be defective out of the box , i have experienced this first hand

    with a Client shop vehical supplied NAPA one , Balkamp brand

    a OEM voltage regulator has never let me down


    only way i roll ....



    denso pic - Copy.jpg




    DSCN9913.JPG DSCN9911.JPG
     
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  4. Solace in Solitude

    Solace in Solitude SILVER Star

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    mrboatman and RAGINGMATT like this.
  5. morganism

    morganism SunkCostFallacy

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    Put a ground wire on your igniter case to engine block or body, n all that should go away.
     
  6. gmac

    gmac

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    Thank, I will have it checked at the auto store.
     
  7. gmac

    gmac

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    Thank Ragingmatt.
    Prior to changing the voltage regulator it has been doing the surges for probably about 5 yrs, so basically, since I owned the truck, about 5 years.
    I was going to go with and OEM, but my understanding was that they are no longer available. Would you happen to have a source (Preferably a mud source) for one?
    Thanks
     
  8. gmac

    gmac

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    Thanks, looks like I have some reading to do.
     
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  9. gmac

    gmac

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    Thanks, and pardon my ignorance, but where/what is the igniter case?
     
  10. Solace in Solitude

    Solace in Solitude SILVER Star

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    I believe @RAGINGMATT is showing you (above) that HE sells oem voltage regulators. ;)
     
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  11. gmac

    gmac

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    Yes, I believe so as well. Could not find it through the links in the signature. I will send @RAGINGMATT a private message.
     
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  12. gmac

    gmac

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    @RAGINGMATT, here are photos of the harness and alternator.
    IMG_2619.JPG IMG_2620.JPG IMG_2622.JPG

    Thanks
    Guy
     
  13. gmac

    gmac

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