It’s a not a bad job, and with the experience I have, I can knock these out pretty quick. Now where is this resistor board in your car. Alexis Mabrey Removal of the right side dash trim is usually all it takes to access the heater/blower area of the vehicle. Various issues may cause your blower fan to malfunction, including a blown fuse or damage to the blower … If the resistor shorts or fails, it may cause the blower motor to remain stuck on one fan speed. The Heater Resistor is also known as the Resistor Pack or … if your blower is working but keeps cutting out then there are more chances of a faulty blower. I have a 2003 Accord with the same problem. I have checked all fuses … I dont know whats wrong with this. So, a problem with the vehicle's cooling system might also cause the heater to underperform or stop working. However, when the blower fan is not working correctly, you may notice little to no airflow coming from the vents. This can also be caused by a blower motor switch, so a proper diagnosis is highly recommended if you are uncertain of what the issue may be. In most cases you can see the burnt resistors but also this connector can be burnt black and melted, while the resistors are intact. Thanks for the help. He said blower motor might be bad. I then shut off my car and ran my errand, and when I came back out the blower was suddenly working exactly the way it should. Part Number 52409 Temperature Climate Control Knob Assembly: 20.00 at wreckers. So get out there and give it a … If the fan isn’t working, you probably need to have the blower motor fixed or changed. The fan is powered by a motor and derives power which is routed via fuses installed in the dashboard. YourMechanic’s technicians bring the dealership to you by performing this job at your home or office 7-days a week between 7AM-9PM. 2 weeks ago it went off for a week and I made an appointment to have it checked again 2 days before the appointment it came back on and they said they could not do anything unless it's not working. They were fine. Starts and stops itself. To solve your problem you can purchase either the resistors , the plug harness or both. Your car uses coolant – usually made up of 50% antifreeze … I noticed the fan was not blowing any air through the vents. 2. Heater Blower not working 8 Answers. Now the resistor board part is fastened to the air vent with two Philips screws. How Long Does a Heater Blower Motor Last? Thought I would check to see if someone else had this problem and well yes, someone does! The ac/heat worked great until a couple days ago. His personal service was excellent. The most popular service booked by readers of this article is Vehicle Engine Cooling Inspection. Once the problem has been diagnosed, you will be provided with an upfront quote for the recommended fix and receive $20.00 off as a credit towards the repair. I tried the manual self diagnostic on the recirc and rear defrost button with no luck. The fan blower for your ac/heater is located under the glovebox. Over the last ten years or so, motor manufacturers have introduced more sophisticated Heater Blower Resistors to control the blower fan motor for the heater and, on many, the digital aircon too. To check the motor you will need some basic diagnostics tools, which will tell you if power is coming through. There may be an internal problem with the AC compressor. The most common cause of a failing heater core and heating system, in general, is dirty coolant. If you're suffering from low coolant, it's not going to be able to circulate through the entire system properly in a way that transfers heat from the engine to the cabin of your car. First off some background info to get you in the right mode. Accessibility. 2001 LINCOLN TOWN CAR 4.6 engine, 68000 miles heater/AC blower will come on sometimes when the car is started and may come on for several starts, then go off and stay off for several starts and then come back on. Just wanted to share my experience with the intermittent running blower. Unplug the wire connector carefully using a small flat blade screw driver to move out the latch type arms holding the plug into the resistor board. The blower motor resistor is an electrical component that is a part of the vehicle's heating and air conditioning system. The speed control chooses the speed of the motor by changing the resistance in series with the DC fan motor. This 2005 Vauxhall Astra H came in from another shop for me to fix the Heater Blower that wasn't working. Probe the live terminals in the multi-plug. The heater control valve controls the flow of coolant to the heater core when the heater or defroster is turned on. Oh yes, take the old part with you so you can match the parts. Once its out, file the brushes touching the armature and you are good to go for another one or two years. The blower motor resistor is the component directly responsible for controlling the blower motor fan speed. It is responsible for controlling the blower motor’s fan speed. LEARN MORE. K. Pohl you will start at the blower motor itself, hotwire it with power and ground, if that works then work your way backwards in the system, the blower resister is usually next in line and a big problem on many cars. 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