Help - M6040 Temp Guage Not Working

altonwelch

New member
Nov 26, 2013
14
0
1
Monroe, LA
Update - M6040 Temp Guage Not Working - Fixed

Hey all,

The temperature gauge on my M6040 HDC-1 is not working. Never moves off of cold. I also notice the glow plug light comes on before I start it, which usually only happens when its very cold. It's definitely not cold here in Louisiana!

I am thinking it must be the sending unit. Any idea where the sending unit is on the engine? Are there any fuses or anything that would cause this to happen?

Thanks in advance!
 
Last edited:

altonwelch

New member
Nov 26, 2013
14
0
1
Monroe, LA
Update - M6040 Temp Guage Not Working

Just in case anyone comes across this thread, the reason my Temp guage was not working turned out to be rats. They had a field day with the wiring harness on my engine. Dealer fixed it up last fall, but I decided to update this thread just in case anyone has a similar issue.