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Water temperature

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Jonny Quest View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Jonny Quest Quote  Post ReplyReply Direct Link To This Post Topic: Water temperature
    Posted: May-31-2018 at 1:32am
Take your handy I/R thermometer out with you to the lake and take some readings at the block water pump, thermostat housing, etc. That will let you know if your gauge is accurate.

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desertskier View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote desertskier Quote  Post ReplyReply Direct Link To This Post Posted: May-30-2018 at 11:51am
You can also try running a temporary separate ground to the gauge.   Mine was reading similar to what you are seeing until I recently rewired my dash. It would read around 200 after a ski run but now it reads 160 cruising and slightly higher after a ski run. The new wiring definitely made a difference.
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Hollywood View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Hollywood Quote  Post ReplyReply Direct Link To This Post Posted: May-30-2018 at 2:58am
Yes just make sure whatever connections you disconnect are above the waterline.
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leftseat88 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote leftseat88 Quote  Post ReplyReply Direct Link To This Post Posted: May-30-2018 at 2:28am
180 at speed and close to 200 at idle. Can you change the impeller/ thermostat while the boat is in the water?
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Gary S View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Gary S Quote  Post ReplyReply Direct Link To This Post Posted: May-28-2018 at 5:20pm
Should be pretty close to what thermostat is in it. Fuel injected boats 160, carb'ed boats 140. What is yours doing? You can actually see on my gauge when the thermostat opens
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8122pbrainard View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 8122pbrainard Quote  Post ReplyReply Direct Link To This Post Posted: May-28-2018 at 5:19pm
Jason,
Here's some answers from your post last September.
Originally posted by 8122pbrainard 8122pbrainard wrote:

Jason,
Before you throw parts at the problem, I suggest getting a true engine temp with an IR temp gun. Shoot the temp next to the gauge temp sender. BTW, the 160 at speed and then the 180 dropping back to idle I consider normal. When did you get the 200 reading?

Originally posted by 8122pbrainard 8122pbrainard wrote:

Jason,
Do check the accuracy of your gauge reading with an IR gun but, what you are seeing may be normal. Running hard, temp will go up then when you come back to idle water flow is low so you don't get immediate cooling.

Mark suggested checking all the suction side hose connections. I too recommend that.


Did you ever check the temp with an IR?


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leftseat88 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote leftseat88 Quote  Post ReplyReply Direct Link To This Post Posted: May-28-2018 at 4:37pm
Hey All,
I have a 96 Sport Nautique, what is a typical water temperature range. I just put a new impeller in and I’m not sure it is working properly
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