Hot Hot Hot

starfire2426

Cadet
Joined
Sep 15, 2009
Messages
14
I have a yamaha 90hp that keeps overheatiing when i run it at 4grand or more. Ive replaced the hole impeller assembly and changed out and the temp.sen. Still have the same prob. can anyone help.

marc
 

robert graham

Admiral
Joined
Apr 16, 2009
Messages
6,908
Re: Hot Hot Hot

Did you turn the impeller blades in the right direction? how about the thermostat? checked water passages for obstructions? Good Luck!
 

99yam40

Fleet Admiral
Joined
Sep 7, 2008
Messages
9,131
Re: Hot Hot Hot

you said you changed the temp sen.
does that mean you put in a new sensor or switch? Did you check the old one to see what it reacted like ? Did you check the thermostat to see what it opened at and how far? Did you install a new one?
Robert ask if you had checked the cooling passages, that means pulling the head and the cover plate to see what they look like, did you do any of that?

The best way to get input is to give all the info in your first post along with the model number so we all know what motor we are talking about and what all you have done already.
Just like the # 1 post says to.
 
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