Is coolant up to level? Are heater control cables functioning to their full travel Thermostat may be defective and opening too soon. Heater maybe either "airbound" and need to be bled or may be plugged
fuel injectors are pluged take them out and put a power and a ground to the wire ends and blow them out or just replace them
The blower on the back heater may need to be replaced on the 2000 Ford Winstar.
underneath the dashboard on the passenger side.
you may not have the heater water hoses plugged in
U JUST NEED A NEW WATERPUMP MINE WAS DOING THE SAME THING AND I PAID FIRESTONE $700 TO PUT MINE IN. YEAH WAY TO MUCH CAUSE THE WATERPUMP ITSELF IS ONLY BOUT $150 SO DONT GO THERE
probably the heater core is clogged
The heat valve is stuck open.
No, the only thing it could possibly do is blow the bulb.
Could be low coolant, stuck thermostat, bad heater control head (if climate control)
Faulty thermostat. Plugged heater core. Temp blend door malfunction.
heater will not blow on a 1996 ford contour
if the heater does not blow out warm air change the setting.