One problem related to manifold/header/muffler/tail pipe has been reported for the 2006 Ford Explorer. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2006 Ford Explorer based on all problems reported for the 2006 Explorer.
I noticed a yellow fluid leaking from the thermostat housing. I took it to a mechanic and he said that the antifreeze was leaking from somewhere in the manifold, probably the thermostat housing. We replaced the thermostat housing and brand new o-rings and added silicone sealant around the affected areas. We are still seeing the leaking. I have seen this complaint numerous times and it is time that Ford take responsibility for the plastic parts that are connected to the engine. Ford must use metal parts to replace these for me because plastic warps in the heat of florida. The affected parts are the thermostat housing and it's connection to the engine. I have a 2006 Ford Explorer eddie bauer 4. 0 with 55k mileage. Good maintenance always, oil changed regularly, fluids checked and maintained regularly. Ford must fix this!.