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Posted on Mar 01, 2011
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I have a 1980 Honda CX 500 Custom and the Temperature gauge shows hot if I run the bike above 6000 rpm for any length of time. If I run a bit slower it seems to hold its own. What temp should the coolant be under normal highway driving conditions? George

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  • Anonymous Mar 01, 2011

    What is redline rpm?

  • cascumpeque Mar 02, 2011

    Red line RPM is 9700

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David Belcher

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  • Posted on Mar 01, 2011
David Belcher
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Honda temperature gauges tend to run high before the electric fans kick in. They also tend to read differently on different bikes of the same model (fuel gauge, temp gauge , speedometer, etc.)Your fan is driven attached directly to your cam so it spins constantly. If your machine is not actually overheating or boiling over and has plenty of anti freeze, I would just keep an eye on it and not worry about it. If your engine gets really hot it will tend to leak anti freeze down the left rear cover past the water pump seal. This is normal and should be of little concern unless the water pump develops a steady drip. Then the water pump seal is bad and will need to be replaced.

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  • Posted on Jul 15, 2011
Mitchell Baughman
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Change the thermostat and unscrew the temp sensor and clean it off with steel wool.

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