I have received some fantastic advice in the past and cannot compliment this forum and the people enough.
Allow me to, once again, come to the forum for advice.
Vessel is a 1990 Wellcraft, twin Mercruise Inboard Engines (MEI) 454's, Borg-Warner V-Drive systems, etc.
I changed out the impellers for both engines (removed the pumps from the engines, carefully replaced the impellers at home in the garage, reinstalled the pumps, etc).
I found some crumbled rubber in the pumps from destroyed impeller blade(s) and cleaned everything as thoroughly as possible.
When I start the engines, the port engine does not register any temperature increase.
I've let it run for an equal period of time as the Starboard engine (which registers nice engine temp increase, etc) but no temperature indication at all on port side.
Checked all the wiring, appears to be fine and in condition prior to the impeller changing.
Strange that a temp sensor would quit and it would be very coincidental it would happen at the same time as this impeller change.
I can switch sensors with the other engine to verify the sensor didn't go bad but it would be strange if this happened so suddenly AND associated with changing out the impeller.
Any and all thoughts greatly appreciated.
Thanks in advance,