Replacing thermostat housing on a 2006 ford explorer

SOURCE: I have a 2000 Ford

your fan clutch could be bad.

SOURCE: Bublling in the thermostat housing and very hot upper radiator hose

I recommend flushing the radiator thoroughly if not done recently. there seems to be some sort of blockage in the radiator at this time. if you get lots of metal fragments that are flushed out during this flush, i will then recommend a rebuild on the radiator or replacement of the radiator. make sure the cooling fans are cycling on time as well.

Marvin

• 85242 Answers
• Posted on Aug 11, 2009

SOURCE: Ford Explorer 2006 Overheating

then the head gaskets are blown

SOURCE: replaced thermostat and housing, still

check to make sure the coolant is running freely into and out of the radiator. you can do this by squeezing the inlet and outlet hoses when the engine is cold, so you dont burn your hand.
also while the engine is cold, open the reserve/overflow cap outside the radiator, usually next to the side wall. with the cap off, one by one squeeze each cooling system hose, and see if it backs or forces coolant into or out of the overflow reservoir. if coolant comes out of the top inlet hole when squeezing a hose, the thermostat is probably stuck closed, if the coolant in the reservoir bubbles from below, you probably have a clog in the engine ports where the coolant passes by the head to cool it off. if you have ever put only water in the radiator instead of the proper mixture of coolant to water. there could be some mineral or calcium deposits clogging things.

SOURCE: I have a 2002 Ford

sounds like you didn't seat the new thermostat correctly, check that first. Other then that you will need to have it pressure tested again to find out what else is leaking.