Car Repair World

Heater Working Of Automotive Car Heater System. Helpful Information Many aspects of the heater system can malfunction which require repair . A air cabin filter is used to clean impurities from the air before it enters the ventilation system, when this filter becomes plugged it can slow the airflow in which case the  filter  needs replacement. An engine coolant leak can develop which hinders the performance of the heater system, these leaks must be  repaired  before proper heater operation will return. When a heater core fails, a coolant residue may be observed upon the passenger side floorboard, this will typically be accompanied by a sweet, pungent odor. Most heater core inlet hoses can be identified by the diameter sizes of 1/2", 5/8" and 3/4". Heater system controls are adjusted by one of two ways, either a manual system is used which is adjusted by the driver, or a climate control computer responds to a setting, which is then automatically adjusted. Som...

Vent Low or No Air Flow Very low air flow from all heater vents Easy step by step guide one how to troubleshoot and repair vent low air flow, this article pertains to most vehicles. Difficulty Scale: 3 of 10 Step 1  - Most air control vents are equipped with a flow control door that is located at the vent outlet. This door is controlled by a thumb wheel that when activated will open and close the vent air flow door. Work the thumb wheel from one side to the other while checking the airflow. The flow should stop and start again, if the thumb wheel does not make a difference the problem is somewhere else. Step 2  - Most cars are equipped with a cabin air filter or hepa filter. These filters are designed to clean the air before it exits the air vent. If this filter becomes clogged due to lack maintenance it will stop or slow the flow of air exiting the vents. To check this filter locate the filter housing which can be either under the dash on the passenger side or...