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2000 4.0 ohv thermostat housing

Discussion in 'Under the Hood' started by Ford enthusiast, February 24, 2018.

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    1. Ford enthusiast

      Ford enthusiast New Member

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      City, State:
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      Year, Model & Trim Level:
      2000 explorer xlt
      My 2000 ford explorer xlt 4.0 ohv thermostat started leaking coolant around like the motor. I don't see where the housing can be replaced. What exactly needs to be replaced to fix this problem?
       
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    3. Runnin'OnEmpty

      Runnin'OnEmpty Well-Known Member

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      Year, Model & Trim Level:
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      The thermostat housing itself rarely leaks, but it has an O-ring type gasket that seals the housing to the engine block that will leak. The housing is held on by 3 bolts. Any auto supply store should stock the new gasket/O-ring.

      First make sure the leak isn't coming from where the radiator hose seals onto the thermostat housing. The fix might be as simple as tightening the hose clamp...
       

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