2002 Ford Ranger thermostat

  • 1 POST
  • 2002 FORD RANGER

Heater problem
2002 Ford Ranger 4 cyl Two Wheel Drive Automatic 20000 miles

how to change (location) thermostat

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Wednesday, October 29th, 2008 AT 9:07 AM

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  • 644 POSTS

The thermostat is inside the thermostat housing located at the end of the upper radiator hose.
Follow the upper hose; where it hooks up to the engine is your thermostat housing.

-put car on ramps/jack stands
-drain radiator
-disconnect upper hose from thermostat housing
-remove thermostat housing
-remove thermostat
-scrap the old gasket off the engine and the thermostat housing
-put new gasket and thermostat (spring side pointing toward the engine)
-rebolt the thermostat housing
-hook the upper hose back up
-refill your radiator and overflow tank with coolant
-with radiator cap off, turn on car and let it run
-check for leaks
-squeeze upper hose a little bit to get the air out.
-when coolant starts pouring out of the radiator, put cap back on.
-take the car for a short drive, and make sure it doesn't overheat (sometime air gets trapped in the system preventing the thermostat from operating properly).
-turn car off and let it cool down
-while it cools down check for leaks again.
-check coolant level inside radiator (make sure the engine is cool before you remove the radiator cap!) And overflow tank; add coolant if necessary.

I suggest you buy a manual (haynes/chilton); this is a very helpful tool for diy-er, and it's cheap. It will also give you the torque for the thermostat housing.

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Thursday, October 30th, 2008 AT 5:10 PM

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