Automotive temp sensor

[89cruisers]

Hi there everyone, when I installed my 351 the temp sensor quit working before I ever got it in the water so I installed one for a 351 bronco. I have noticed now that it is in the water that the temp gauge reads around 220 at 3k rpms, and about 250 at WOT (which I then slow back down and it cools down) Last year with the old engine I never noticed any temp problems and the previous owner told me the water pump / impellar was replaced, my question is, is it possible that the automotive temp sensor does don't communicate correctly with the marine gauge, or is it time to replace the water pump?

 

[gbeltran]

Re: Automotive temp sensor

Yes to your question about the sender, I haven't seen a marine gauge that uses the same sending unit as an automotive piece. Usually they have the same one used in the majority of aftermarket gauges, Autometer, sun, etc. What brand are the gauges?

 

[89cruisers]

Re: Automotive temp sensor

Whatever brand came new with the boat, I'm not near the boat right night otherwise I would look, but they are marine