[C320-list] Overheating Problem

[jonvez at comcast.net]

Rick,

As others have suggested, I would test the thermostat...very easy to do. My 3GM/Euro runs a tad under 180 unless really being pushed hard and cool down is in the 160's.......Do you mix your coolant with water? That can also play a role in the temp...good luck...

Regards,

Jon Vez

-------------- Original message -------------- 
From: Rick Onyshko <rick_o at ameritech.net> 

> I have a 3 year old Yanmar 3YGM and had an overheat alarm go off on my first 
> trip after the winter. I replaced the impeller, no missing vanes. It seemed to 
> run at normal temp ~ 150 for over an hour. Today I took it out and had it 
> idling while I dropped sails and put fenders out, and it did not overheat but 
> the temp went up to about 170. Returned to 150 when I started moving forward 
> and the RPM went up. 
> 
> Not sure if anyone has any ideas or suggestions, it has typically run right at 
> 150 pretty consistently. 
> 
> Thanks 
> 
> Rick 
>