over heat horn

[wayne 39]

i have a 94 120hp evinrude vro. the other day i was out and started the motor the horn sounded and then the overheat horn sounded and wouldn't go off. the motor had not been running for about 1/2 hour. water was coming out the pee hole and the compression check show 120lp per piston. i put a new overheat switch on it and the horn stopped. could it just have been the switch?

 

[12Footer]

Re: over heat horn

Yes, the overheat thermoswitch can fail. they can short to the motor ground, and the alarm will sound.<br />You probably cured it.Just keep an eye on it for a while.

 

[schlotterr]

Re: over heat horn

A quick test. When the motor has been running for a while you should be able to place your hand on the engine block without getting burned. It should be hot like coffee but not burn you. Good luck.

 

[12Footer]

Re: over heat horn

Good way to describe it, bob. ("hot like coffee")