Water Temp. Gauge

[Deleted User]

!954 Hornet converted to 12 volt . Water temp. gauge don't work. If I ground wire at eng. sender unit the dash gauge goes over to hot. I have tried another sender unit . Can anyone help me troubleshoot this problem? Another question on this car- It has the oil bath air cleaners. Has anyone converted these to take a dry paper element? Thanks Norm

ratlee2

When you replaced the temperature sending unit, did you put sealant on the threads that would prevent the body of the sending unit from grounding? Just a thought.



Rich

VicTor Z

Hi Herm, didn't Press convert his oil bath to a dry paper element on his convert. ?

(Manana Man)

[Deleted User]

Go to a NAPA store and pick up a STANDARD MOTOR PRODUCT #VRC-604 or a NIEHOFF #FF-126C. These were used on 55 and 56 Fords when they went to 12 volts but used the 6 volt gauges. Unhook your ACC wire that goes to the gauges and connect it to the ACC or plus side on the unit then run a wire from the other connection to where you unhooked the ACC wire on the gauges. You are now back to the volts the gauges require. I just hope you did not burn your units trying 12 volts. Walt's Garage.

mars55

Is your gas gage reading OK? If not, your Constant Voltage Regulator is inoperative. If your gas gage is reading OK, you have bad connection, bad cylinder block sender unit or a bad gage. Make sure that all the temperature gage connections are clean and tight and the gage mounting screws are tight. If you have a voltmeter, one of the temperature gage connections should read 5 volts to ground and the other connection should read less then 5 volts to ground.



To check the cylinder block sender unit do the following:

a. Submerge the unit in water up to the hexagon shoulder in a pan.

b. Connect a ohmmeter between the terminal and the case of the unit.

c. Heat the water to 160 degrees F.

d. The ohmmeter should read between 25.8 to 30.8 ohms.



If the above checks out you have a bad gage.