ALARM COMES ON 57 L BRAVO

"I HAVE CHANGED THE THERMOSTAT

"I HAVE CHANGED THE THERMOSTAT 160 DEGRES AND THE IMPELLER,BUT 3000RPM THE ALARM COMES ON AND THE TEMP GAUGE INDICATE 180 DEGRES.tHE ENGINE IS 130 HOURS,THE TIMMING HAS BEEN CHECKED AND HEAD GASKETS HAVE NO PROBLEM.What could be the problem?"

Back flush all the impeller ho

Back flush all the impeller hoses. Alarm may not be for temp.

When the alarm comes on does i

When the alarm comes on does it run any different?

the engine runs perfect even w

the engine runs perfect even when the alarm comes on.
And the impeller has just been changed.

thanks

"Clean all connections on your

"Clean all connections on your water temp sensor and your oil pressure sensor. It could be a false alarm from bad connection, or even a failing sensor. Use a guage to measure actual oil pressure while running, both engine cold and hot. An hand held InfaRed temp guage could be used to measure various locations about the engine, as discussed in numerous other threads.

I had a case where oil pressure was good at startup (45 psi) but gradually dropped to zero after engine was at operating temp. A second guage screwed in place of the sensor revealed the sensor was failing and oil pressure was really fine."