Temp gauge rapid movement. |
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seacamper
Platinum Member Joined: June-24-2010 Location: Florida Status: Offline Points: 1056 |
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Posted: March-12-2015 at 12:58am |
Hey All,
My GT40 powered 99 Air Nautique has a temp gauge that moves up to 185 then back to 160 over maybe a 3 to 5 minute cycle. No temps are being exceeded, its just that it has only started it over the past month or so. Is it anything I should be worried about?? Tom |
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1980 Ski Nautique Boat Bar
1988 Mastercraft Tristar Open Bow 1988 Mastercraft Tristar Closed Bow 1969 Seacamper Houseboat 1986 Harris Pontoon 2004 Seadoo GTX SC + Flydive Xboard 1999 Adventurecraft |
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storm34
Grand Poobah Joined: November-03-2008 Location: Dexter Iowa Status: Offline Points: 4492 |
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jbear
Grand Poobah Joined: January-21-2005 Location: Lake Wales FL. Status: Offline Points: 8193 |
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I guess Chris doesn't think so!
john |
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"Loud pipes save lives"
AdamT sez "I'm Canadian and a beaver lover myself"... |
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lewy2001
Grand Poobah Joined: March-19-2008 Location: NSW Australia Status: Offline Points: 2234 |
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Tom when does it happen?? After a long ski run?? or while idling ??
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If you're going through hell, keep going
89 Ski <a href="http://www.correctcraftfan.com/diaries/details.asp?ID=5685" ta |
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Smithfamily
Platinum Member Joined: December-26-2007 Location: Orlando, Fl Status: Offline Points: 1602 |
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I would check the wires/ connections.
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Js
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8122pbrainard
Grand Poobah Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41040 |
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Tom,
Mark has a good point. If his question is what is happening, the temp swing is normal. |
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Gary S
Grand Poobah Joined: November-30-2006 Location: Illinois Status: Offline Points: 14096 |
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Out of 2 PCM's and 1 HM I have never seen them swing a 25 degree change except on shut down. Something is up especially if it's hasn't done it before. Get yourself a IR thermometer and check it while it's happening and go from there.
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Hollywood
Moderator Group Joined: February-04-2004 Location: Twin Lakes, WI Status: Offline Points: 13510 |
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Check the impeller. Get a pair of gaskets and compare both thermostats in a pot of water on the stove. Science project for the boys!
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TRBenj
Grand Poobah Joined: June-29-2005 Location: NWCT Status: Offline Points: 21109 |
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A 25deg fluctuation on a PCM is a little above what id prefer to see. A cooling system in good shape wouldn't see that big of a swing. That's assuming the temp is going up after a hard run and return to idle. No other scenario should cause any fluctuations at all.
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seacamper
Platinum Member Joined: June-24-2010 Location: Florida Status: Offline Points: 1056 |
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I guess it was a bad thermostat. Replaced it with a new gasket, and all is well.
Thanks Guys, Tom |
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1980 Ski Nautique Boat Bar
1988 Mastercraft Tristar Open Bow 1988 Mastercraft Tristar Closed Bow 1969 Seacamper Houseboat 1986 Harris Pontoon 2004 Seadoo GTX SC + Flydive Xboard 1999 Adventurecraft |
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