The Ford Barn

drolston · 08-09-2020, 09:15 PM

My temp gauge is reading too high to live with. Placing 1.5 volt D cell on the power input to the gauge, with the wire to sender grounded, moves the needle from barely visible right to the 3/4 mark. Bought a replacement on Ebay which exhibits the exact same response. Okay, it was the cheap one; supposedly NOS but clearly well used. So, it is entirely possible that I have two bad gauges. I opened up the cheapo unit and noticed that the thin insulation around the very thin heater wire was deteriorated. Also found that the adjustment teeth can move the needle power-off point, but can not fully correct my too-low deflection problem.

So, before I buy the expensive replacement gauge, please confirm (JSEERY?) that 1.5 volts should put the needle on a correctly functioning Temp gauge near the center mark.

08-09-2020, 09:15 PM	#1
drolston Senior Member Join Date: Jun 2014 Location: Williamsburg, VA Posts: 1,627	Temp Gauge Adjustment My temp gauge is reading too high to live with. Placing 1.5 volt D cell on the power input to the gauge, with the wire to sender grounded, moves the needle from barely visible right to the 3/4 mark. Bought a replacement on Ebay which exhibits the exact same response. Okay, it was the cheap one; supposedly NOS but clearly well used. So, it is entirely possible that I have two bad gauges. I opened up the cheapo unit and noticed that the thin insulation around the very thin heater wire was deteriorated. Also found that the adjustment teeth can move the needle power-off point, but can not fully correct my too-low deflection problem. So, before I buy the expensive replacement gauge, please confirm (JSEERY?) that 1.5 volts should put the needle on a correctly functioning Temp gauge near the center mark.