Check for air lock,When is cold open cap and run engine untill get worm put back the cap.
SOURCE: Cool air blowing from heater, even when on high.
if the heater core is bad, it will leak or not flow water. even tho you can "hear" the blend door working, it may not be actually moving inside the box. check to see if the actuator is connectd to the blend air door. You may be hearing the actuator moving but not the door.
SOURCE: 2002 jeep grand cherokee heater doesn't blow hot
If ythe heater core is not bad then I would replace the thermostat, this will stop the warm coolant running up to your engine go to the heater core.
SOURCE: Ford Windstar SE, 3.8L V6, 1999, front seat heat/defrost is cold
the blendor actuators strip out the gear inside the actuator cases on these all the time. replace the actuator.
SOURCE: 2001 F250 super duty 5.4 has very little heat.
You should have a heater control valve in one of the heater hoses. Check that when you set the controls all the way up hot that the valve is opening the whole way to allow hot coolant to run thru the heater core. If the valve is working and allows flow, you may have to take it out to check it. Then the problem will be the heater core is most likely clogged and needs cleaned out or replaced.
Testimonial: "Thanks for the help and suggestions"
SOURCE: i have a 1998 ford f-150 and no heat. i have
You just might have an air lock. Try bleeding the system from the heater hose at the firewall. Losen one hose a little, and at operating temp. open slightly to let air out. You will lose some coolant, but just refill the rad. Now, both hoses should get hot.
335 views
Usually answered in minutes!
×