My chart tells me that at 39 F you should have a reading of 4712 Ohms and at 43 F it should read 4316 Ohms. Given that info, your reading of 4040 would be about right at 40 F. There is a slight margin of error in the readings so don't be worried if it's not exactly 100% spot on.

What is your sled doing that you think you have a bad temp sensor?

AF

 

THANKS AF FOR THE INFO, I JUST GOT THE SLED FROM A GUY WHO LIVED IN THE BLACK HILLS. I DROVE IT OUT THERE AND RUN OK, BUT SEEMED TO BE RUNNING RICH. T CHANGED THE PRIMARY CLUTCH SPRING FROM YELLOW SPRING TO A RED SPRING FOR LOW ELEVATION AND NOW IT RUNS SUPER RICH, FUEL LEAKING OUT FROM THE EXHAUST GASKETS. I HAVE CHANGED THE PLUGS COUPLE TIMES BUT STILL THE SAME. SINCE I DONT KNOW THE HISTORY OF THE SLED, I JUST STARTED CHECKING THINGS, COMPRESSION, TPS AND ETC. THE COMPRESSION IS 125 AND WIRING ALL LOOKS OK. I DIDNT GET TO TEST IT OUT MUCH HERE BEFORE THE SNOW ALL MELTED.

THANKS RYMANIZER