Good old Bill

OK, there is no heat, blend door rotates 1/4 turn manually, electric actuator rotates the same 1/4 turn. Trying to back flow front heater core on a 2001 4.6L expedition. Can or will someone direct me to a site for a parts diagram for this vehicle. Please help! Cannot get any flow of coolant back into the engine from the heater cores. Perhaps I need to change my name from Good old Bill to Old and stupid!

jstockert

If both heater hoses are not hot after warm-up then you possibly have a clogged core. Good luck

Pacificsvt

white89gt

Bill, the Motorcraft cores are the preferred cores for these trucks. Because you are not getting flow through, like mentioned before, you core is plugged. Might want to invest in one of the tools to release the clips on the heater core hoses..... but the hoses on these trucks will outlast the o-ring seal. If they are bad, you can go get the seals at Autozone.

Forgot to add this... here's a "how to" on the core in the dash. It is a Word document... hopefully you have Word, lol. If not, Google Docs will open it, but probably jack up the format a bit.