Car Air Conditioner Blower

A faulty automotive air conditioner can be one of the more difficult issues to diagnose and repair.

Car air conditioner blower.

A faulty blower fan can make the car ac stopped working suddenly. The air conditioner won t run properly unless your engine is running. The cool air felt from the dash vents is provided by the ac heater blower motor assembly. Turn the air conditioning on while the car is running.

If your car s air conditioner isn t blowing cold air the first thing you should look for are signs of leaking or an a c compressor that does not engage. Most car manufacturers use a series of resistors to make the heater blower motor run at different speeds. Carac not blowing air from vents because of the following. If you are feeling air and the blower motor is allowing the fans to produce air at all speeds you next want to feel the actual force of the air coming through.

The first thing to check if your car air conditioner does not blow cold air is the condenser fan. If you do not feel any air or if you only feel air coming through the vents on certain settings the problem may lie with the ac s blower motor or the blower motor resistor. The ac evaporator acts like a huge ice cube. Sometimes blower motors and or their resistors will fail and stop pushing both hot and cold air through the vents.

In addition you should also check the condenser fan s wiring and connection and its placement to see if it is positioned correctly. 1 blower fan problem. If the fan is damaged and does not operate at full power it will not cool down the heat coming from the refrigerant. And when one or more of these resistors burn out you re usually left with only one heater blower motor speed high.

It s then typically installed in the ductwork near the car blower either under the dash or under the hood. The resistor module is easy and inexpensive to replace. The best setting for diagnosis is fresh air not recirculated with the air blowing out of the center vents in the dash and the ac turned on. Start with the fan speed turned to its highest setting.

It contains the cooled off refrigerant that absorbs heat from inside the passenger compartment. When the car ac is not blowing air from vents it is a sign of a faulty blower fan or air duct blockage. Classic auto air engineers have been using their multi faceted knowledge of classic car air conditioning to design the most high performance model specific a c kits available since 1977. The number one cause of failure is a leak due to age and wear.