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  1. 08-01-2019, 03:33 PM #1
    RumbleBee95
    RumbleBee95 is offline
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    Charging system questions.

    97 150 EFI. Something has been drawing the battery down. That could be an issue within itself or could the charging system somehow do that? Second I am not sure that my charging system is performing properly. First my rpm gauge started bouncing around like a ping pong ball. Then it died. I replaced it. That one worked ok for like 1 trip. Now no rpms.... someone suggested my voltage regulator might be bad causing this. I don’t know. Finally what would my output voltage from the stator and from the voltage regulators be so I would know which parts to eliminate one by one. Thanks in advance.
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  2. EuropeanAM
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    Mercury 3L/4 Stroke/Verado Moderator EuropeanAM's Avatar
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    #2 08-01-2019, 05:07 PM
    Lots of good info for that engine in the next forum down (2.5L models).

    Good idea to do a quick visual inspection of the Stator and Voltage Regulators FIRST. Look for any burnt, melted or discolored bobbins on the stator.

    Look for any burnt, blackened or brown bullet connectors on the RED or YELLOW wires of the Voltage Regulators.

    If you note this on the regulator- they are replaced IN PAIRS (also replace any damaged connectors).


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  3. RumbleBee95
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    #3 08-01-2019, 05:43 PM
    Well I was under the impression by the title of the page that, THAT page was for racing style, or modded engines. My bad I will post on there instead.
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  4. JOE54
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    #4 08-02-2019, 08:04 AM
    oem only regs also please
    .................................................. ...the scariest thing in life is the unknown ...................................
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