There is a door behind the dash that changes cold and hot air flows. The door is probable stuck or the control circuit has failed causing the hot air to blow on cold.
Your climate control in your 1998 Ford E250 Cargo Van blows cold air when in heat position and sometimes it blows warm air when in the cold position?
You have a bad fan clutch..............
i know this is fuel injection problem but where to start shop wants1200. to fix
you must have low coolant or a bad heater core
You are likely in an antarctic region.
Check coolant level Replace thermostat Check to see if heater core is plugged, restricted, or airbound Check temperature control cable
make sure both knobs are all the way up on red for heat...
can you please clarify what you mean, do you mean that the front heater blows cold but the rear blows hot or do you mean that when the heating is on cold it blows hot? many thanks paul
It has a bad "Blower Motor Resistor" The fan switch itself is fine.
low freon, bad compressor, clogged lines, plugged condenser etc etc
ruud furnace only blows cold air, no heat
a/c blows warm air when idles cold when running