Question about 2001 kawasaki VN 800 Vulcan Classic

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2001 Kawasaki vulcan 800

When I start the engine the two warning lights (oil pressure and high temp)remain on. I've checked the oil level, water level as wel as the oil filter and oil screen. Visually checked all the wiring and plug in sockets for corrosian.

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  • xhousemover Jan 18, 2009

    Hi again and thank you for your help - its most appreciated

    I followed your instructions with the following results;

    With the engine off and the key on: when I remove only the water sensor wire both warning lights stay on; when I remove only the oil pressure sensor wire both lights go out.

    When I check the water sensor with a ohmmeter (one probe to the sensor one probe to the motorcycle frame and set on the 20k setting) I get a reading of .01; when I do the same test to the oil sensor I get .00.

    What should I replace? Thanks again for your help!


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The two switches you are having problems with are thermetically controlled; they can easily short out which will cause the light to stay on. First what I'd like you to do is disconnect them at the sending unit, if the lights still stay on you have a short somewhere deeper in the wiring. Most likely it will be a grounded wire. If the lights do go off you will then want to use an OHM meter to check continuity at the senders. If you get solid resistance then the sending unit is shorted out, if one remains open then isolate the other. You may have a situation that one switch is causing both to stay lit.
Let me know if this helps you out at all. Tell me if you don't have the resources to co the diagnostics as described and I'll be happy to give you a work around. We will just have to be a little creative.
Either way let me know and I'll be happy to help you resolve the issue. I'm inclined to thing your problem is a short not a heat related issue since both sending units are both indicating a problem.

Posted on Jan 15, 2009

  • Rob Selvy
    Rob Selvy Jan 19, 2009

    If I'm understanding you correctly the water censor appears to be the one with grounded continuity. You will want to replace the water censor. Please let me know if you have any further questions or problems. It's my pleasure to be able to assist you.


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2002 Kawasaki Vulcan 1500 Classic Fi
2002 Kawasaki Vulcan 1500 Classic Fi

• 2002 Kawasaki Vulcan 1500 Classic Fi
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With its exceptional performance, nostalgic looks and high-tech enhancements, the Vulcan 1500 Classic Fi is just the ticket for the high-minded cruiser enthusiast.

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Also available this year are the Vulcan Classic and Drifter™ models. The Classics include the 800, 1500 and 1500 Fi, and provide a choice in both displacement and technological advancement without sacrificing style. Similarly, the Drifter 800 and Drifter 1500 provide a stylish retro appearance, but in both the mid- and heavyweight-cruiser genres.
In addition to the bikes, a key element to the cruiser lifestyle is customizing the motorcycle to fit individual design tastes and performance needs. Fortunately, Kawasaki offers its own extensive line of genuine Fire & Steel™ accessories. Motorcyclists can choose from literally hundreds of parts to customize their Kawasaki Vulcan motorcycles, and in doing so, make their own bold statement. Customers can find Fire & Steel accessories at their local Kawasaki dealer or shop online at

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