"Where Fillmore County News Comes First"
Online Edition
Thursday, July 24th, 2014
Volume ∞ Issue ∞
 

My heater isn't putting out much hot air. What's wrong?


Wed, Dec 8th, 2010
Posted in Ask the Expert

It could be any of a number of problems. A heater that's working properly should blow air that's about 75-100 degrees F. hotter than the outside air. If it doesn't, any of the following might be at fault:

* A low coolant level, often due to a leak or weak radiator cap, but may also be the result of not getting the cooling system completely filled.

* An open thermostat that's too cold for the application. Most vehicles today require a 190-195 degree F. thermostat.

* A defective heater control valve.

* A plugged heater core.

* An inoperative airflow control or inlet door in the heater ducting or plenum.

* A defective blower motor.

No Comments Yet. Be the first to comment!







Your comment submission is also an acknowledgement that this information may be reprinted in other formats such as the newspaper.