Mechanics

FORD F-150 THERMOSTAT PROBLEM

2003 Ford F-150 • 165,000 miles

Replacing thermostat on 2003 f150 4.2l round rubber seal or gasket came with thermostat, does it go in housing on top of thermastat or behind thermostat at engine
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January 6, 2013.




Thermostat-4.2L

Removal

Partially drain the cooling system.
Remove the upper radiator hose.

Remove the water thermostat and paper gasket assembly.

1 Remove the bolts.
2 Remove the water outlet connection.
3 Remove the water thermostat and paper gasket assembly.

Installation

NOTE: The water thermostat is indexed and must be installed correctly.

Install the water thermostat.

Install the thermostat.
Install the water outlet adapter and the bolts.

Connect the upper radiator hose.
Fill the cooling system.

Dont see a rubber seal on this one. It may be thermostat that fits many years and models.

Did you remove a rubber seal with the old one?

Roy



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