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  1. #1

    Default Temp Alarm at startup

    Hello all, I have a 1990 Johnson VRO 90 outboard. Recently, my temp alarm starting going off as soon as I start the engine, no way its overheated as its right at start up. Alarm sounds for about 10 seconds, then goes off but the light stays on. The engine is peeing strong, but I do have some water sputtering out of 2 holes at the rear of the engine. Is this a problem? Any info to help me diagnose why the alarm is going off is much appreciated, i don't want to end my season early!

    I have video of what is happening but I cant seem to upload it.

    Thank you!

  2. #2
    Join Date
    Apr 2010
    Posts
    5,290

    Default Re: Temp Alarm at startup

    Try disconnecting the sender in the cylinder head and see what happens.

  3. #3
    Join Date
    Apr 2010
    Posts
    5,290

    Default Re: Temp Alarm at startup

    What ever happened ????

  4. #4

    Default Re: Temp Alarm at startup

    I have a theory I am going to test out when I go up on Sat. I do know the engine is not overheating as the engine temp was checked independently (and the fact that it happens immediately and there is water flow). I will definitely report back after I check a few things, including your suggestion @boobie. Thanks!

  5. #5
    Join Date
    Sep 2010
    Posts
    22,582

    Default Re: Temp Alarm at startup

    Maybe the buzzer itself is defective.----What light stays on ?------Model # of this engine ?

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