Thanks for the information. I believe I have found the wire for the sender resting along the bottom. I think I'll have to take the air filter off in order to reach it.
The car seems to be driving well aside a perhaps more frequent CEL for code 172. But today I noticed some new sounds coming from the engine. There seems to be a high pitch hissing/whining sound coming from around the water pump (but not necessarily the water pump.) I believe that there is a new clicking/knocking sound coming from the passenger side of the engine. It may be that I'm just paying more attention than I used to.
