Expedition heating problems
My 1998 Ford Expedition has a weird problem. Start engine and let it run
coolant gets and hoses get hot but dash gauge reads cold and only cold air
comes out then all of a sudden gauge will go to normal operating range and
air coming out of heater will get hot. Next thing you know air gets cold and
check gauge and it is on cold again with hot coolant in engine and tank.
Could this be a bad sensor and it controls coolant flow? Help please. Almost
forgot I have the 5.4 with rear air.