I have a 2008 3.0l with an Alpha 1 drive. It has a 160* thermostat. The temp gauge (Faria) has always run around 175*. This year since I put it in it is now running closer to 200* on the gauge. I have used an infared temp. gun around the engine and the highest temp I can find is around 155* near the temp sensor.
I pulled the sensor and checked resistance vs temp as per the Mercruiser manual and it seems to be ok. I have changed the thermostat, the impeller in the drive and checked the hoses for obstructions. All check ok even the impeller didn't show any signs of wear but I replaced it anyway. Still runs warmer than normal according to the gauge.
At this point I don't know if I have a problem or not.
Any ideas or input? Could it be a bad gauge and if so how would I test it?
Thanks, Mike
I pulled the sensor and checked resistance vs temp as per the Mercruiser manual and it seems to be ok. I have changed the thermostat, the impeller in the drive and checked the hoses for obstructions. All check ok even the impeller didn't show any signs of wear but I replaced it anyway. Still runs warmer than normal according to the gauge.
At this point I don't know if I have a problem or not.
Any ideas or input? Could it be a bad gauge and if so how would I test it?
Thanks, Mike