| sarahcecelia | -- 12-24-2019 @ 6:02 AM |
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I think that sometimes it may not be the temperature senders that are to blame when the dash gauge reads too high, and the motor temperature is normal. It may be the gauge that is old and at fault. . I just purchased a NOS temp gauge, and when I use my "Ray Gun" temp reader and a candy thermometer in the radiator, and they read 180 degrees (or very close to it,) I'm going to have that NOS gauge "jury rigged," to see what it reads. It should read, according to the Ford Repair Manual, in the middle.) If it does, or close to it, I'll know that the gauge in the dash is the problem, Not the sender in the head. Regards, Steve Lee
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| cliftford | -- 12-24-2019 @ 7:03 AM |
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These temp gauges [and sensors] are not precision instruments. On my '48 at 3/4 position it shows 180 degrees, measuring the temp the way you did. At full hot it shows 210 degrees I just remember that and compensate for it. You probably will have a hard time finding a nos or original guage or sender that does any better.
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| trjford8 | -- 12-24-2019 @ 7:51 AM |
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Almost all of the old Fords I have owned show the temp gauge at 3/4 when the engine is at 180 degrees.
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| carcrazy | -- 12-24-2019 @ 12:10 PM |
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A mechanical Stewart-Warner or other quality temperature gauge can be used to more accurately monitor engine coolant temperature. It can be mounted in a small mounting panel beneath the instrument panel.
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| 51woodie | -- 12-25-2019 @ 4:30 AM |
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I worked hard and learned a lot about the gauges in my '46 Coupe, in order to get them all working. The previous owner didn't worry about the gauges working I guess. Even though they all work now, with some semblance of accuracy, I still installed a set of mechanical gauges. They may look ugly to some "original people", but they do give a good measure a comfort to me at least, knowing what is actually happening on the front side of the tin. Merry Christmas and Happy New Year to all. Left pic is at 55 MPH and right pic is at idle. This message was edited by 51woodie on 12-25-19 @ 4:32 AM
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| sarahcecelia | -- 12-25-2019 @ 4:55 AM |
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I'll gladly take the challenge to get one that reads as Ford designed it to!! I have 2 N.O.S. in their original boxes at the present time. Regards, Steve Lee
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| sarahcecelia | -- 12-25-2019 @ 4:57 AM |
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Mine read there too at 180 degrees, but the Ford Manual says they should read mid point at that temp! Regards, Steve Lee
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| sarahcecelia | -- 12-25-2019 @ 4:58 AM |
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Really?, your kidding me, right!!??? Regards, Steve Lee
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| cliftford | -- 12-25-2019 @ 8:02 AM |
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Saraceclia, you seem to be contradicting yourself.
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| trjford8 | -- 12-26-2019 @ 7:04 AM |
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If it were me I would not worry about what the manual says. A lot of people will pass through your town and neve know that your temperature gauge is not accurate according to the manual. As long as you know where the gauge needle sits at 180 degrees is all that counts. You might want to check to see if your sending unit(s) are making a good ground connection.This can affect accuracy.
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| 51woodie | -- 12-26-2019 @ 6:46 PM |
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Daniel Brown wrote a four page document on gauge calibration, and it is very detailed. The copy I have is a copyright, so I will not post it. I believe he is a EFV8C member and may wish to share.
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| estout81 | -- 12-30-2019 @ 1:29 PM |
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1 1/2V [1 D cell battery] equals 1/2 scale. 3V [2D cell batteries] equals full scale [hot].
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| estout81 | -- 12-30-2019 @ 1:36 PM |
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Got that backwards on the gauges. Should read cold with 3V. Sorry.
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