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GT 40 Runs at 160 but does to 180 after s |
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ski1 
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Joined: August-04-2006 Location: United States Status: Offline Points: 2 |
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 Topic: GT 40 Runs at 160 but does to 180 after sPosted: August-04-2006 at 3:44pm |
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My 1999 Sport runs at 160 normally but will go up to 180 for 1 minute at idle after running at high power setting. Changed the impeller that was still good but it still does it. I have never noticed it do this before and I look at the temp all the time. Any thoughts?
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Ski
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TRBenj
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Joined: June-29-2005 Location: NWCT Status: Offline Points: 21192 |
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Posted: August-04-2006 at 4:13pm |
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That doesnt sound that abnormal for a Ford. My boat will pick up a good 10 degrees if I run it hard and then come back to an idle. As long as your temp comes back to 160 after a min or so, you should be OK. Check all hose clamps and the strainer to make sure theyre tight and youre not sucking any air, just to be safe.
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ski1
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Joined: August-04-2006 Location: United States Status: Offline Points: 2 |
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Posted: August-04-2006 at 6:09pm |
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Ski
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Tim D
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Joined: August-23-2004 Location: United States Status: Offline Points: 2641 |
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Posted: August-04-2006 at 6:22pm |
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I would change the thermostat, easy to do, not expensive. Do you leave lake water in the motor year round? The thermo could be very rusty.
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Tim D
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The Dude
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Joined: October-19-2004 Location: Houston Status: Offline Points: 1335 |
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Posted: August-04-2006 at 7:22pm |
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Funny...I just changed the t-stat in mine and now it's doing what ski1 described. Never did it before. Impeller is good...tstat new... I'm not too worried about 160, but don't want more than that.
I guess it's another winter project. |
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Tim D
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Joined: August-23-2004 Location: United States Status: Offline Points: 2641 |
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Posted: August-04-2006 at 10:43pm |
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What style was it? The one on the right below is a PCM. The one on the left is just marine. Both are 140 degree, but the PCM looks to allow more flow.
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Tim D
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The Dude
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Posted: August-05-2006 at 10:25am |
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My t-stat was pcm straight from skidim.
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