Why does my blower motor resistor keeps melting?
Trent, one of the biggest reasons for blower motor resistors to have shorten life is actually because of faulty blower motor drawing too many amps, some times melting wires/plugs, heating up resistors shortening their life. Many Dodge forums tell of this problem.
What does a bad blower motor smell like?
Blower motors commonly overheat due to clogged air filters. For these reasons, if you notice this smell and your air filter is fine, turn off your heater and call an HVAC technician pronto. Gunpowder. Similar to an electrical smell, a gunpowder-like aroma could indicate a fried fan motor or circuit board.
Why does my AC smell like burning rubber?
Homeowners that have an older AC system may have a belt-driven blower fan. If you do, and your AC smells like it’s burning, your fan belt might need to be replaced. Over time, the belt can become weak or wear out completely. Eventually, the fan belt will overheat and create a burning rubber smell.
What causes blower resistor failure?
In most cases, a blower motor resistor fails due to corrosion or overheating. Sometimes, the mechanical resistance to the motor rotation causes an excessive electric current that can overheat and prematurely damage the blower motor resistor.
Why does my fan smell like plastic?
The burning smell means something has overheated. The fan motor and other parts need to cool down before you investigate any further. You should also avoid breathing in more of the fumes of whatever plastic or paint might be burning up. Turn off the fan and walk away for several minutes.
What are the symptoms of a failed blower motor resistor?
Blower motor resistor problems. Problems with a blower motor resistor are common in many cars. The most common symptom of a failed blower motor resistor is when the heater fan only runs at high speed and doesn’t work at low speeds.
What was the wire that melted on my blower?
One of the center wires is burned and melted about 1/4 inch outsode the plug. By wiggling that wore I can get speeds one through four to work again, but the wore and plug get really hot. I bought the connector and resistor at Auto Zone last time, the one that’s in there now.
How much does it cost to replace a blower motor resistor?
The blower motor resistor or control module replacement is not very expensive. For example, one of our colleagues had a problem with his 2011 Ford Escape: the fan only worked at the speed 4. He paid $50 to diagnose and $112 to replace the resistor at a local Ford dealership.
How is the speed of the blower motor controlled?
The electronic module that controls the speed of the blower motor is called a blower motor control module. In some cars, the blower motor has only 4 or 5 fixed speeds. In this case, the speed of the blower motor is controlled by a blower motor resistor.