Posted by Greg Coffin [67.176.56.44] on Friday, June 26, 2015 at 19:42:26 :
The heat gauge on my 1962 WM300 has never worked right. When I got the truck it read 1/2 way when the engine was cold, and quickly pegged as the engine warmed. I bought a new sending unit, supposedly for a WM300, but it did the same thing. I ended up adding a few resistors to the line to bring it more to the center, but that's not the right way to fix it. But at this point I don't know if the sending unit or the gauge is the problem.
I'm looking for the correct sending unit number for a 12v gauge. Also, is there any way to test the temp gauge to see if it is bad.
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