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1984 f150 straight 6 300 overheating problems

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-Check water. If it's low add more.
-If water is full then the thermostat is not open when temperature reach above its setting.
-Test the thermostat . If it's not working then replace new one.
-If it's working (Start to open when temperature reach about 185 and up) Then now you need to check the cooling fan sensor. If the thermostat is open but the cooling fan sensor not work and kick the fan than it'll be over heat too.

Good luck


Posted on Aug 11, 2015


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