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FJR Motorcycle Forums
Technical & Mechanical Problems
Gen III Engine Temp / Low Ambient Temps
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<blockquote data-quote="d in the d" data-source="post: 1136811" data-attributes="member: 86546"><p>Hi All,</p><p></p><p>I've done a bit of searching but have not found if anyone else has encountered this. Since this is my first few hundred miles this last weekend I saw some "interesting" things on the engine temp readouts.</p><p></p><p>The stats</p><p></p><ul> <li data-xf-list-type="ul">Under 200 miles on the clock.</li> <li data-xf-list-type="ul">Ambient temps were low 40's</li> <li data-xf-list-type="ul">Engine temps were cycling between 150ºF and 180ºF within 30 seconds to 1 minute.</li> <li data-xf-list-type="ul">At first I thought it was a slug of hot water recycling through the cooling loop that may have been generated at a stop light. The temp cycling never did go away until the ambient temp rose above 55ºF. After that, engine temps seemed to hover normally with no spikes.</li> </ul><p></p><p>My thinking is that at lower ambient temps, an opening of the thermostat causes a huge thermal transfer from coolant to outdoor air.</p><p></p><p>I'm sure the engineer's designed and tuned to cooling system to work best at typical riding temperatures of 55ºF and above.</p><p></p><p>I'm sure that such immediate real time data that the temperature sensor readout provides is info overload and should not be a concern since the temps changed very fast. I am sure that the engine overheating concern during break in is for sustained high engine temperatures and not for anomalies like this.</p><p></p><ul> <li data-xf-list-type="ul"><strong>My question is, am I correct in assuming that this is normal - <u>keep riding it</u>! </strong></li> </ul><p>or</p><p></p><ul> <li data-xf-list-type="ul"><strong>Do I take it in for a warranty service for a sticky thermostat.</strong></li> </ul><p></p><p>If anyone would care to chime in, I would appreciate your feedback.</p></blockquote><p></p>
[QUOTE="d in the d, post: 1136811, member: 86546"] Hi All, I've done a bit of searching but have not found if anyone else has encountered this. Since this is my first few hundred miles this last weekend I saw some "interesting" things on the engine temp readouts. The stats [LIST][*]Under 200 miles on the clock. [*]Ambient temps were low 40's [*]Engine temps were cycling between 150ºF and 180ºF within 30 seconds to 1 minute. [*]At first I thought it was a slug of hot water recycling through the cooling loop that may have been generated at a stop light. The temp cycling never did go away until the ambient temp rose above 55ºF. After that, engine temps seemed to hover normally with no spikes. [/LIST] My thinking is that at lower ambient temps, an opening of the thermostat causes a huge thermal transfer from coolant to outdoor air. I'm sure the engineer's designed and tuned to cooling system to work best at typical riding temperatures of 55ºF and above. I'm sure that such immediate real time data that the temperature sensor readout provides is info overload and should not be a concern since the temps changed very fast. I am sure that the engine overheating concern during break in is for sustained high engine temperatures and not for anomalies like this. [LIST][*][B]My question is, am I correct in assuming that this is normal - [U]keep riding it[/U]! [/B] [/LIST] or [LIST][*][B]Do I take it in for a warranty service for a sticky thermostat.[/B] [/LIST] If anyone would care to chime in, I would appreciate your feedback. [/QUOTE]
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FJR Motorcycle Forums
Technical & Mechanical Problems
Gen III Engine Temp / Low Ambient Temps
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