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Disconnect upper radiator hose from engine and the thermostat should be there. I have worked on vehicle that had thermostat underneath so if it is not located in upper radiator hose it will be in the bottom hose
Drain the coolant from your Explorer into an adequate
container by opening the drain plug at the bottom of the radiator. Save
the coolant for reuse if it is relatively new and clean.
Remove the negative battery cable from the battery if your
Explorer has a 2.9-, 3.0-, 4.0- or 5.0-liter engine. This step is not
necessary for 2.3- and 2.5-liter engines.
Follow the upper radiator hose to the front driver's side of
the intake manifold, where it meets the engine. This is where the
thermostat housing on your Ford Explorer is located. If necessary,
remove the air cleaner duct for easy access to the housing.
Loosen the clip on the end of the radiator hose and pull the
hose off the thermostat housing. Use a 10mm wrench or socket to remove
the two retaining bolts on the thermostat housing cover. Remove the
Note the position of the thermostat before removal. Pull out
the old thermostat. Seat the new thermostat inside the housing in the
same position as the old one, spring-side facing into the engine.
Install new gasket over the thermostat.
Reattach the thermostat housing cover and the radiator hose.
Reinstall the air cleaner duct if removed earlier. Fill the radiator
with reserve or new coolant. Start your Explorer and run with the heater
blowing until the engine gets warm. Check for leaks.
you should have one upper radiator hose, one lower radiator hose, a small diameter hose that runs over the top of your radiator starting from the radiator cap going left across the top and then to your coolant reservoir and another from your thermostat housing to the firewall for the heater core the upper radiator hose should also go to your thermostat housing. the lower radiator hose goes to your water pump This hose routing is only for a 4 liter straight 6 I'm not sure about the V8 or the 2.5 liter motors
Follow the top radiator hose to where it connects to the engine block. There will be a housing with two or three bolts holding it down. Remove the radiator hose from the housing, remove the bolts and lift the housing off. The thermostat will be sitting under the housing.
Locate the thermostat. The thermostat is in a metal housing at the end of the radiator hose where it connects to the engine.
Drain enough coolant to make the water level below the the thermostat level so that the coolant doesn't spill everywhere...
Remove the thermostat:
The housing is held down by two bolts. Remove the bolts, remove the thermostat and scrape the gasket and sealant from the housing and the manifold.
When replacing, use Permatex #2 - non-hardening gasket sealant.
Replenish the radiator with 50/50 coolant/water mixture (re-use what you took out; don't pour down drain or on grass - kills vegetation).
Remove radiator cap and let engine warm up (look for leaks) to allow trapped air in the cooling system to escape.
Note: there may be some burping valves near the thermostat. If obvious, open them to allow air to escape.
Who told you this??????? There is only one Thermostat in your Truck. Follow the Upper Radiator Hose to the Motor. Remove the Housing that the Hose is Connected to and the Thermostat is Under the Bell Housing.
the rad cap is on the top of the radiator on the passenger side,as for the thermostat....locate the upper rad hose(comes out of the top of the rad aprox 3" wide) it should be on the driver side of the rad. Follow the upper rad hose from the rad to the engine,the housing for the thermostat is at the end of the hose. 1:drain the radiator(there is a drain **** at the bottom of the radiator protrudes from rad looks similar to a wing nut) 2:Remove the two bolts in the thermostat housing(there may be some nuts holding some ground wires there that you have to remove before you can remove the thermostat housing bolts) 3:remove the housing ...........note: make note of the position of the thermostat before removal. 4:clean gasket surfaces install new gasket \ silicone (automotive grade silicone can be used with or without gasket) 5:insert new thermostat in the proper position. 6:replace housing and hose and top up the rad hope this helps.......Thanks for choosing FIX YA!