What degree thermostat to use? - Ranger-Forums - The Ultimate Ford Ranger Resource


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Old 03-29-2010
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What degree thermostat to use?

Hey guys i just got done putting a 31"x19" Griffin aluminum radiator and dual E-fans in my ranger it has a 1996 ford explorer 5.0L i have a 160* T-stat in it now what do you guys recomend?
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Old 03-29-2010
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160 sounds pretty cold to me, especially for you living somewhere that snows
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Old 03-29-2010
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Maybe ill switch to a 180* then.
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Old 03-29-2010
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I had a 93 5.0L in my 88 Ranger and I ran a 190 degree.
The engine ran in the 200 to 205 “gauge" range most of the time and the engine never over heated.

Too cold and the engine will not run at full efficiency.
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Old 03-29-2010
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ya i think i will try a 180* then i dont want the motor to run much over 200
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Old 03-29-2010
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Don’t forget that the 5.0L is designed to run hotter than the older 302s, that is part of the emission system and fuel consumption may suffer if running cooler.
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Old 03-29-2010
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160 is too cold. I always run a 180 in my 5.0L Mustang.
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Old 03-29-2010
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and on very hot days is still makes its way to 200 in heavy traffic.
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Old 03-30-2010
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180 for sure. 160 is too cold. Some of the sensors are designed to only work at 178* and up if I remember correctly.
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