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06-14-2015, 05:29 PM | #1 |
Senior Member
Join Date: Jul 2011
Location: central nj
Posts: 717
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1940 for temp gage
my 40 coupe runs at 160-170 degrees on a 90 deg day, temp gage goes all the way to hot, changed gage to brand new NOS gage,and NOS temp sender two pole type. gage doesn't work at all. installed my old single pole temp sender. after running about ten minutes it goes all the way to hot, I'm thinking it has to be the sender , not sure why the two pole sender did not work, again i check the engine with inferred temp gun still running at 160-170 ,
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06-14-2015, 06:18 PM | #2 |
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Join Date: Nov 2012
Location: Wichita KS
Posts: 16,132
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Re: 1940 for temp gage
The single post senser is an on/off switch I believe. If it is activating it will send the gauge to high but is defective in the first place.
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06-14-2015, 06:28 PM | #3 |
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Join Date: May 2010
Location: Meredith, N.H.
Posts: 766
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Re: 1940 for temp gage
Hmmmm, interesting as I am going through the same issue. I bought a pr. of supposed good sending units and my dash gauge does the exact same thing. I'm using a heat gun just to make sure and so far so good.
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06-14-2015, 09:00 PM | #4 |
Member Emeritus
Join Date: Nov 2012
Location: Wichita KS
Posts: 16,132
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Re: 1940 for temp gage
Nope, I had it backwards, the two post sender is the fixed temperature on/off style. It is set for around 204 deg. The single post sender is the one that provides a range of readings.
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06-14-2015, 09:22 PM | #5 |
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Join Date: Dec 2013
Location: Minnesota, Florida Keys
Posts: 10,319
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Re: 1940 for temp gage
Just for general information, the single pole sensor in my '51 went bad on me and the gauge read LOW. I ohmed it out and compared to some other sensors I had, it was significantly different. (I don't remember the exact values.) I installed another of the sensors (which all "ohmed out" about the same,) and the tempuratue gauge read correctly again.
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06-24-2015, 12:55 PM | #6 |
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Join Date: Mar 2015
Location: Portland Oregon
Posts: 86
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Re: 1940 for temp gage
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