Hi guys,
I recently replaced the water pocket, impeller assembly, lower unit, bellows, upper bellows, water shutter, manifold gasket, elbow gasket, etc. The engine is running much cooler now in the 140 degree range. The water temp reads accurately when the gauge is working. On any given boat ride of 5 minutes or more, the gauge drops to zero. Sometimes it comes back to life on a boat ride, sometimes not. I carry an IR gun with me and am able to verify appropriate temps when the water temp gauge is pegged.
Today, the gauge was reading both normal, zero, and full overheat even though the actual manifold was around 145 degrees.
I grounded out the temp sensor. When the gauge is working normally, I can ground the sensor to the block and it instantly pegs full hot. When it’s not functioning, grounding it to the block does nothing.
Do these symptoms clearly point to a specific thing?
thanks!
I recently replaced the water pocket, impeller assembly, lower unit, bellows, upper bellows, water shutter, manifold gasket, elbow gasket, etc. The engine is running much cooler now in the 140 degree range. The water temp reads accurately when the gauge is working. On any given boat ride of 5 minutes or more, the gauge drops to zero. Sometimes it comes back to life on a boat ride, sometimes not. I carry an IR gun with me and am able to verify appropriate temps when the water temp gauge is pegged.
Today, the gauge was reading both normal, zero, and full overheat even though the actual manifold was around 145 degrees.
I grounded out the temp sensor. When the gauge is working normally, I can ground the sensor to the block and it instantly pegs full hot. When it’s not functioning, grounding it to the block does nothing.
Do these symptoms clearly point to a specific thing?
thanks!