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How do you replace the thermostat located on a 1999 Ford F-150?


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2015-07-15 19:17:22
2015-07-15 19:17:22

Follow the upper rad hose and at the engine is the housing that houses the thermostat. When replacing it make sure the spring goes toward the engine.


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Find the thermostat at the engine end of the upper rad hose. When you replace it , make sure the spring goes toward the engine.

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This is a 15 year old vehicle. The thermostat is very cheap insurance. Just replace it when performing a cooling system service. Replace it by removing the old thermostat, carefully cleaning off the old gasket. Install the new gasket & thermostat, spring toward engine block, and tighten to factory specs, and no more.

should be located by the thermostat housing on front of engine block

it is located and accessible under the dash by the front passenger floor board. need 8mm nut driver only. easy

Follow the top radiator hose to the thermostat.

Its in the fuse box under the stearing wheel.

Temperature Gauge Sending Unit The sending unit is located in the front section of the intake manifold in the vicinity of the thermostat. Change it.

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on a 1993 4.9 it is just to the left of the thermostat where the radiator hose and heater core hoses go into the thermostat it has a couple of wires running into it.

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they are under the little circle black things which are called coils

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I don't think 1999 F150 had a cabin air filter option. I have never seen an F150 with a cabin air filter, and all the guys around here I have asked have never seen one either.

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assuming it is a 5.0 L it is located on front side of motor just left of thermostat housing however it can also be found in the back of engine located in the supply line to heater core more than likely beside thermostat

The spring goes towards the engine and if there is a vent hole , the thermostat is installed with the vent hole at the top if the thermostat is installed vertically

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