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10-16-2020, 09:44 AM | #1 |
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Join Date: Jul 2010
Location: 36 miles north of Albany NY
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What’s a quick test for temp sending unit?
I pulled a single screw temperature sending unit from a junk head, it’s stamped KS on the side. What’s the easiest way to test it? If it’s good I’ll put it in my spare parts stash.
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10-16-2020, 10:13 AM | #2 |
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Join Date: May 2010
Posts: 968
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Re: What’s a quick test for temp sending unit?
read an old Motors manual, these are King Seeley units, it tells how to test them, step by step
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10-16-2020, 11:40 AM | #3 |
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Join Date: May 2010
Location: Coral Springs FL
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Re: What’s a quick test for temp sending unit?
corvette: Peruse these threads.
Plus, I read a thread on fordbarn a while back on someone who actually figured out a way to repair these units on his own. https://www.fordbarn.com/forum/searc...rchid=18281647 Also, read through these threads. https://www.fordbarn.com/forum/searc...rchid=18281764 |
10-16-2020, 11:51 AM | #4 |
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Join Date: Dec 2013
Location: Minnesota, Florida Keys
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Re: What’s a quick test for temp sending unit?
I fixed one a while back. Look at this thread : https://www.fordbarn.com/forum/showthread.php?t=226078.
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10-16-2020, 02:05 PM | #5 | |
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Join Date: Jun 2014
Location: Williamsburg, VA
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Re: What’s a quick test for temp sending unit?
Quote:
Can be done without losing more than a few tablespoons of coolant as you swap senders. |
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10-16-2020, 02:21 PM | #6 |
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Location: 36 miles north of Albany NY
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Re: What’s a quick test for temp sending unit?
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10-16-2020, 03:48 PM | #7 |
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Location: Delanco, New Jersey
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Re: What’s a quick test for temp sending unit?
One way to test is with an Ohm meter. The reading between the screw and the the body of the sender unit is in the area of 12-14 ohms. Readings in this range usually indicate a good sender unit.
Hope this helps, Tom |
10-16-2020, 04:38 PM | #8 |
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Join Date: Nov 2012
Location: Wichita KS
Posts: 16,132
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Re: What’s a quick test for temp sending unit?
Not sure what that would check other than the calibration resistance. Guess it would also tell you the points were closed. The issues if not working is normally the points needing cleaned. Tubmans thread covers that.
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10-16-2020, 06:04 PM | #9 |
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Join Date: Jun 2010
Location: San Antonio, Texas
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Re: What’s a quick test for temp sending unit?
I use a hot plate with a pan of turbine oil to heat the sender unit. (turbine oil won't burn and it won't boil at 230 degrees but water will get you in the ball park). Some jumper leads and an old Ford/KS gauge that I know still works along with a 6-volt power source will do the job. I use an infrared thermometer to check the temps. A person can do it right next to the car if they have long enough jumper leads.
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