Need some help diagnosing an issue - my aftermarket coolant temp gauge on my 2520 quit working. I had to install one since Deere decided to not include one on this tractor - shame on them!
This is the gauge I bought and installed in 2015 - it has worked perfectly until a couple days ago.
2 days ago the gauge was becoming erratic. It would be showing the proper temp then the needle would get erratic between that temp and zero (all the way low), then be OK for a minute and back and forth. As of yesterday the needle wonít move. It acted as if there was a short in the power or ground wire.
Pulled the dash cowl off this morning. Visually checked all the wires and found no breaks. Tested for power and ground at the gauge and were fine. Did a continuity test of the lead that goes to the sensor and that is fine.
So wondering what to try next or just order a new gauge with sending unit. I donít know if gauges like this can go bad or if the sending unit can go bad.