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Old 11-15-2021, 08:42 AM   #18
Frank Miller
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Join Date: May 2010
Location: Auburn, MA
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Default Re: Coolant flow diagram

Do you need extreme accuracy or does the efi just need to know when to go to warmed up mode? If you take a laser thermometer you can pinpoint temps in certain areas. Ford put the sensors in the middle of the head and my thought is that is the hottest part of the engine seeing how that's the water over the siamesed exhaust port.
If it is easy to use that as a starting point then do so and use the thermometer after you have it running to see how optimal it is.
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