The Ford Barn

bullfrog · 06-13-2018, 06:44 PM

Hi

I have a 1952 ford f2 6cyl 226 it is wired 6 volt. I have all new wiring and gauges. I just installed a new temp sending unit and hooked everything up. I did not use teflon tape when I installed the sending unit, it should be getting a good ground. When I turned the ignition on the temp gauge remains pegged at hot and does not move to the cool side of the gauge. Am I missing anything? How do I tell if I have a bad gauge or sending unit? Thanks in advance for all of your help.

19Fordy · 06-13-2018, 07:36 PM

Here's some helpful info.
https://www.fordbarn.com/forum/showt...e+sending+unit

Ken/Alabama · 06-13-2018, 07:57 PM

Make sure your actually getting voltage to the back of the temp gauge.

koates · 06-14-2018, 03:14 AM

First test with a voltmeter that you have 6 volts on the correct ignition supply terminal at the back of the gauge with the ignition switch turned on. Note that ford temp gauges read in the "H" or Hot position when at rest with the ignition switch off. This is opposite to the fuel and oil gauges. Remove the wire from the sender unit and ground it to the engine block. Turn the ignition switch on and the gauge should go quickly to cold. Don't leave the ignition switch on for more than 10 to 15 seconds when testing otherwise overheating the gauge winding will result. If the gauge goes to cold during this test then it is OK and the sender unit is most likely at fault. YOU do need the correct ford matching sender unit and not just any old other type sender unit. Regards, Kevin.

rotorwrench · 06-14-2018, 12:35 PM

Sponsored Links (Register now to hide all advertisements)

You need a part number 8A-10884 Bulb (stamped 224), Temperature Indicator, Engine Unit. Serviceable used original or NOS are the best ones. They were used on both 6-cylinder & V8 applications in that time frame. You just can't get one better than what King Seeley made. I don't know if I would trust a new reproduction one. I just don't know if they are made the way they should be.

06-13-2018, 06:44 PM	#1
bullfrog Junior Member Join Date: Jun 2018 Posts: 12	sending unit or gauge Hi I have a 1952 ford f2 6cyl 226 it is wired 6 volt. I have all new wiring and gauges. I just installed a new temp sending unit and hooked everything up. I did not use teflon tape when I installed the sending unit, it should be getting a good ground. When I turned the ignition on the temp gauge remains pegged at hot and does not move to the cool side of the gauge. Am I missing anything? How do I tell if I have a bad gauge or sending unit? Thanks in advance for all of your help.

06-13-2018, 07:36 PM	#2
19Fordy Senior Member Join Date: May 2010 Location: Coral Springs FL Posts: 10,936	Re: sending unit or gauge Here's some helpful info. https://www.fordbarn.com/forum/showt...e+sending+unit

06-13-2018, 07:57 PM	#3
Ken/Alabama Senior Member Join Date: May 2010 Location: Alabama Posts: 3,260	Re: sending unit or gauge Make sure your actually getting voltage to the back of the temp gauge.

06-14-2018, 03:14 AM	#4
koates Senior Member Join Date: May 2010 Location: Melbourne Australia. Posts: 2,079	Re: sending unit or gauge First test with a voltmeter that you have 6 volts on the correct ignition supply terminal at the back of the gauge with the ignition switch turned on. Note that ford temp gauges read in the "H" or Hot position when at rest with the ignition switch off. This is opposite to the fuel and oil gauges. Remove the wire from the sender unit and ground it to the engine block. Turn the ignition switch on and the gauge should go quickly to cold. Don't leave the ignition switch on for more than 10 to 15 seconds when testing otherwise overheating the gauge winding will result. If the gauge goes to cold during this test then it is OK and the sender unit is most likely at fault. YOU do need the correct ford matching sender unit and not just any old other type sender unit. Regards, Kevin.

06-14-2018, 12:35 PM	#5
rotorwrench Senior Member Join Date: Jun 2010 Location: San Antonio, Texas Posts: 16,426	Re: sending unit or gauge Sponsored Links (Register now to hide all advertisements) You need a part number 8A-10884 Bulb (stamped 224), Temperature Indicator, Engine Unit. Serviceable used original or NOS are the best ones. They were used on both 6-cylinder & V8 applications in that time frame. You just can't get one better than what King Seeley made. I don't know if I would trust a new reproduction one. I just don't know if they are made the way they should be.