Boats For Sale:
Low temp readings,gauge |
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 Topic: Low temp readings,gaugePosted: April-16-2013 at 1:41pm |
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I never seem to reach any higher than say 125 on raw water cooled PCM
What is your gauge reading? 
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ononewheel
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Joined: June-21-2011 Location: B Status: Offline Points: 776 |
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Posted: April-16-2013 at 2:55pm |
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I'll bite. Not a bad photo this time.
Combine that with some oil talk, and photos and you'll get some action. |
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If we let the professionals do everything it takes all the fun out of youtube
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GlassSeeker
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Joined: November-26-2008 Location: Elk Grove, CA. Status: Offline Points: 2421 |
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Posted: April-16-2013 at 3:07pm |
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try WFO
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This is the life
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ononewheel
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Posted: April-16-2013 at 3:18pm |
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Remove the t-stat housing, and we will better be able discuss condition, and that usually generates more heat.
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If we let the professionals do everything it takes all the fun out of youtube
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TX Foilhead
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Posted: April-16-2013 at 3:48pm |
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Maybe you left out a gasket.
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quinner
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Posted: April-16-2013 at 3:55pm |
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Or Blew One Either way, think it's time for you to inspect all the hoses. |
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juniorwoody
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Posted: April-16-2013 at 4:02pm |
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If you turn the raw water intake a few twists you will find it too hot to touch.
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Posted: April-16-2013 at 4:38pm |
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What does the thermo stat housing have to do with LOW temp reading?
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Posted: April-16-2013 at 4:39pm |
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Not sure, on any of the responses...
Do you think maybe the gauge is bad? Or wiring has gone funny? |
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mark c
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Posted: April-16-2013 at 5:04pm |
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Because the Thermostat is inside the housing, if its stuck open, or failed open then you will never get the engine up to temp. If the engine is actually getting up to temperature, and the gauge is just reading wrong, then you may have a wiring issue between the gauge and the sender in the side of the block, or if the sender was removed, and put back in with some kind of teflon tape, or plumbers dope you may no longer have a good ground at the block, which will also make a gauge indicate low.
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GlassSeeker
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Posted: April-16-2013 at 5:09pm |
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If it's only getting to 125 you may not have a T stat in there.
My comment was to run it Wide Open Throttle (aka WFO) for a while and see if that doesn't raise the temp. |
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ononewheel
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Posted: April-16-2013 at 5:22pm |
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What does a shot of your t*ts, or some t*ts have to do with your boat temp? |
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If we let the professionals do everything it takes all the fun out of youtube
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ononewheel
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Posted: April-16-2013 at 5:23pm |
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By the way, that sure is a gaudy switch cover.
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If we let the professionals do everything it takes all the fun out of youtube
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mark c
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Posted: April-16-2013 at 5:27pm |
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I think we all recognize the internationla symbol for a low temperature condition.
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TRBenj
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Posted: April-16-2013 at 5:41pm |
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More likely, a few loose screws. |
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Posted: April-16-2013 at 6:22pm |
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Benj - loose screws? The wiring going to the gauge itself? I will check that....
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quinner
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Posted: April-16-2013 at 7:17pm |
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No question someone needs to get up in that motorbox and do some probing
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8122pbrainard
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Posted: April-16-2013 at 9:03pm |
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Loose screws and corroded connections mean higher resistance and a low gauge reading. Get the IR gun out and shoot the temp next to the sender. If it reads higher after you have cleaned up the wiring, open the T stat housing and check what's inside. |
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Posted: April-16-2013 at 9:08pm |
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Ty--------Mr.peter will do that...
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BuffaloBFN
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Posted: April-18-2013 at 10:32am |
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+1 |
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Posted: April-18-2013 at 11:06am |
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I guess, after checking all the wiring and screws nuts, and all that!Plus cleaning contacts...
What am I looking for inside the housing? I know there is a thermo-stat.. But other than that,? |
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forvicjr
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Posted: April-18-2013 at 11:15am |
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I have the same issue, gauge reads barely over 100* with fifty degree water temps. Last year mine would get to around 125* with 70* water temps. This info is all from the gauge. I need to hit the t stat with a laser temp gun.
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BuffaloBFN
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Posted: April-18-2013 at 11:16am |
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You need a starting point, and I'd say cracking the thermo cover to see if it's in there at all is a good place to start. A replacement thremostat should come with the gasket. |
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BuffaloBFN
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Posted: April-18-2013 at 11:20am |
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You may need to look inside as well. It's a simple operation. |
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Posted: April-18-2013 at 11:22am |
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Buffalo-- I had the impeller replaced , my brother claims to replace those every 2 seasons...So after that my readings on the temp gauge went way down?
I doubt it was because of that.. Now earlier in the season I was getting uo to say 125 to 135 maybe.. I will have it gone over, thermo housing and all that ,, ty again... |
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Posted: April-18-2013 at 11:23am |
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forvic--same thing as me...
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BuffaloBFN
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Posted: April-18-2013 at 11:27am |
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The impeller is doing its job; thus the lower temps. The thermo regulates how much water goes through the engine or bypasses. It's a thermostat not unlike the one in your house.
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BuffaloBFN
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Posted: April-18-2013 at 11:27am |
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Usually 2-3 bolts and a gasket.
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forvicjr
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Posted: April-18-2013 at 11:41am |
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Buffalo, my housing came off over the winter. T stat housing is clear. Over in another thread I was trying to find a t stat. Tested mine and all is good. So t stat and housing is non issue. |
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“Tact is the ability to step on a man's toes without messing up the shine on his shoes.” ― Harry S. Truman
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8122pbrainard
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Posted: April-18-2013 at 9:19pm |
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Lin, Since you brother seems to be up with impellers and oil, why not have him do the maintenance? 
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TX Foilhead wrote: