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Author Topic: coolant sensor S1 circuit above vaid limit  (Read 170 times)
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« on: February 14, 2020, 11:43:05 am »

Hello All.
My scarab last year took a lightning strike and toasted almost everything while on the lift. I then removed both big block inboards installed a new transom along with a bracket. I now have twin 300 verados on it. Loving it so far but trying to get the last few bugs worked out.

So I am getting the coolant sensor error. Issue is I ohms checked both and it checks fine. I also it reads normal on my vessel view Mobil. I can even unplug it and it will go to the default 32 degrees. Plug it back in and it goes right back to where it should be. I then swapped the sensors just to be sure. No change. Stb engine still has the coolant sensor fault. Any ideas on what to check next?  The error pops up before the engine is even running. Just turn the key and it pops up.

Getting an alarm at 4500 RPM thinking its because of this sensor. No other errors. If I had an electrical schematic I could trouble shoot the issue pretty easy I'm sure without just throwing parts at it.

It had a shift fault on the other engine. That was an easy fix. Shift neutral switch was stuck and broken. Replaced all good.

Right engine had oil leak at prop shaft took it all apart and discovered a hairline crack in the carrier. Got new bearings and seals and carrier arriving today.

Thanks all for the help.
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