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  1. #1
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    Tachometer issues

    I have a 1992 Laser and I believe I'm having issues with the tach. After shutting the key off the tach will start rising back up. Is it just a wiring issue or is the tach bad itself?

  2. #2
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    When I turn my key off my tach goes back up to around 900 sometimes just 700.
    will do it even with the wires off the back.
    mine is omc but I am pretty sure my old merc done the same.

  3. #3
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    It is probably return spring inside tach. If it does that, tach. is probably inaccurate. test tach. in boat, or remove it & take to dealer with tach. tester. some tach,s. it may be normal.

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    Both my Merc 10,000rpm tach's stay around what rpm the motor was shut off at.

    Dave
    1980 Cougar 19 tunnel,90 2.4L Bridgeport EFI in middle of restoration.
    1988 BAJA Sunsport 186, 96 225 Pro Max
    79 12' Auminum, 95 Merc 9.9
    RIP Stu
    "So many idiots, so few bullets"

  5. #5
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    [QUOTE=Promax200;2986104]I have a 1992 Laser and I believe I'm having issues with the tach. After shutting the key off the tach will start rising back up. Is it just a wiring issue or is the tach bad itself?[/QUOTE

    With the battery switch off turn the key on/off again and see if it zeros.

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