496 ho temp
#1
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Joined: May 2015
Posts: 72
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From: Central louisiana
What water temp will alarm beep? Showing approximately 170, 175 on one engine and 180 on other engine when running and up to 190 when idle after run. No alarms come on an engines run fine at all rpms. New impellers installed. Have heard that gauges could be off some and that temp is read through different sensor for engine ecm. Once again, engines run smooth at any speed. Should I have any concerns?
#3
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Joined: Nov 2006
Posts: 1,313
Likes: 153
From: Tygart Lake, WV
EMCT will alarm at 212*. Confirm temp with a handheld IR temp gun if you suspect non accurate gauges. New impellers mean nothing if the brass seawater pump housing is scored. Many factors can contribute to high temps. Temps do seem on the high side.
Last edited by Ryan00TJ; 05-30-2018 at 08:52 AM.





