Re: TC33D temp. guage not working. Any idea\'s?
I had the same problem with the temp guage on my NH TC33D. I checked it by grounding the wire on the sending unit. By the way the sending unit is on the side of the cylinder head. It didn't work and a dealer replaced the guage it lasted about two months. Again, it went out. Another, dealer came by and checked it and they had to replace the entire instrument cluster. It had drawn moisture and evidently blown something a diode, capacitor, or something. SO they replaced the whole cluster and so far have had no more troubles.