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08-16-2023, 08:27 PM | #1 |
Junior Member
Join Date: Dec 2016
Location: Central NY
Posts: 1
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1951 temp gauge issue
1951 Ford Flathead
Temperature gauge before start up..............H (as it should) Gauge after start up........................................C (as it should) Gauge after warmed up engine.....................C+ plus a very little (malfunction) Shut engine off....turn on key......temp gauge now shows proper temp. Start engine again............................................. C+ plus a very little (malfunction) Changed both temp sending units with known good working ones....same result as above. Help!! Any ideas??? |
08-16-2023, 10:59 PM | #2 |
Senior Member
Join Date: Jul 2011
Location: SF Bay Area
Posts: 6,646
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Re: 1951 temp gauge issue
Too much Teflon tape creates a grounding issue at the senders. Leave off the Teflon and use pipe thread dope instead.
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Alan |
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08-17-2023, 01:18 PM | #3 |
Senior Member
Join Date: May 2010
Location: Coral Springs FL
Posts: 10,950
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Re: 1951 temp gauge issue
Can you by pass the ignition switch? If so, then start the car and see what happens.
Perhaps switch is faulty. |
08-17-2023, 03:24 PM | #4 |
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Join Date: Mar 2017
Location: Alberta Canada
Posts: 93
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Re: 1951 temp gauge issue
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