The temperature gauge in my 75 stays very low. I had replaced the sending unit last year, but it seems there are a lot of ones to choose from -- not sure if the one I have is correct (I got it at a local parts house, so who knows. . .). I have a second mechanical one under the hood which works correctly, so I know the water does heat to 180 okay.
I shorted the wire on the sending unit to ground but the gauge only went to a bit below 220 -- I would have thought it should have pegged.
I hate to buy another sending unit not knowing if that is the whole issue (The only one I found specifically listed for a 75 was from Wilcox for $25.00, but they want another $25.00 for shipping!)
Any ideas?
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