Question about 2004 Ford Ranger
Check that the cooling system is fully serviced (near full mark in coolant reservoir). With engine warmed up, feel (carefully) both heater hoses where they go into the firewall. If both are hot, there is water circulating through the heater core - possibly problem with blend door actuator. If only one hose, or neither hose is hot, you may have a blockage in the heater core. This usually means replacing the heater core, but you may be able to flush it. See this YouTube video: https://www.youtube.com/watch?v=M9SIafVsqyc
Posted on Dec 25, 2016
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Posted on Jan 02, 2017
Likely it has more to do with the door that controlls the airflow. Which should be operated by vacum might check and make sure all thevacum lines are plugged in.
Does the gauge in the car show it warms up?
Posted on Feb 24, 2009
check to see if the blend door is moving where you change the temperature setting. I think your blend door is behind the glove box. Here are instructions for removing the actuator. Take it off, plug it back in and see if the motor rotates. Also check to see if you can rotate the blend door by hand. If you can rotate it by hand, the motor is probably broken of the gears are stripped. Let me know if you have questions.
Posted on Oct 17, 2010
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