John Deere 5105 blowing diagnostics fuse

daRedbone · Mar 12, 2019

I made a mistake on title. It's the F1 position (key switch) I assume I need a new switch????

daRedbone · Mar 12, 2019

NOTE: The air temperature sensor failed a few years ago. I unplugged it and have had no troubles with that since.

thepumpguysc · Mar 13, 2019

On the inj. pump, on the bottom theres a set of wires.. follow them up to the COOLANT temp sensor & unplug it.. the sensor is bad..
Replace the fuse & try to start it..

daRedbone · Mar 13, 2019

That was it (of course). I appreciate it very much. .... I suspect that sensor is an input for cold start purposes. If so I'll leave it unplugged. We average about 7 days a year under freezing and I don't use the tractor on those days.

thepumpguysc · Mar 14, 2019

Your welcome..
& YES, THAT sensor is for the coolant for "cold starts"..
It sounds like u & me are the only ones on the board that have any sense.?? LOL.!!!
Put your "stuff" away when it get COLD.. Lol
On any given day, there are AT LEAST 5 threads about "not starting when cold".. Lol.!!!!