What does the fan resistor do?

The fan speed can be changed either by switching the blower resistor resistance mechanically, using a rotating lever, or electronically by the air conditioning system. The change in resistance then limits the current through the motor, which dictates the speed at which the blower fan works.
A.

What is the purpose of a blower motor resistor?

The blower motor resistor is an electrical component that is a part of the vehicle's heating and air conditioning system. It is responsible for controlling the blower motor's fan speed. A failed blower motor resistor can cause issues with the operation of the entire heating and air conditioning system.
  • What is the role of a turbocharger?

    The turbocharger turbine, which consists of a turbine wheel and a turbine housing, converts the engine exhaust gas into mechanical energy to drive the compressor. The gas, which is restricted by the turbine's flow cross-sectional area, results in a pressure and temperature drop between the inlet and outlet.
  • What does TDI stand for?

    Turbocharged direct injection
  • What is TDCI engine?

    TDCi stands for Turbocharged Direct Common rail Injection system. Direct Common rail Injection system is a technology in both diesel and in petrol vehicles that contains a fuel pump and a fuel line which is further connected to common rail. The fuel will be available to the cylinder through the Injector any time.
B.

What are the symptoms of a faulty cooling fan switch?

Several symptoms may point to a bad or failing thermo coolant fan switch.
  • Engine overheating. Engines generate an enormous amount of heat and as a result are subjected to very large temperature swings if this switch does not operate effectively.
  • Check Engine Light comes on.
  • Broken or shorter signal wire.
  • What are the symptoms of a faulty cooling fan switch?

    Several symptoms may point to a bad or failing thermo coolant fan switch.
    • Engine overheating. Engines generate an enormous amount of heat and as a result are subjected to very large temperature swings if this switch does not operate effectively.
    • Check Engine Light comes on.
    • Broken or shorter signal wire.
  • How much does it cost to replace a coolant temperature sensor?

    The average cost for an engine coolant temperature sensor replacement is between $104 and $218. Labor costs are estimated between $44 and $134 while parts are priced between $60 and $84. Estimate does not include taxes and fees.
  • Is my temperature sensor bad?

    If you have to pump the gas pedal in the morning to keep your car running, you may have a bad engine coolant temperature sensor. Your symptoms are a dead ringer for a bad engine coolant temperature sensor (ECT). The computer is calculating an air/fuel mixture that is too lean.
C.

How much is a fan resistor?

The average cost for a blower motor resistor replacement is between $83 and $150. Labor costs are estimated between $35 and $78 while parts are priced between $48 and $72. Estimate does not include taxes and fees.
  • What are the symptoms of a bad blower motor resistor?

    Symptoms of a Bad or Failing Heater Blower Motor Resistor
    • Blower motor stuck on one speed. A common symptom of a faulty blower motor resistor is a blower motor that is stuck on one setting.
    • Blower motor does not work on certain settings.
    • No air from the vehicle's vents.
  • What is the blower motor switch?

    The blower motor is the electrical switch on the interior of a vehicle that allows the driver to control the vehicle's heating and air conditioning system. It is usually built into the the same control panel that houses all of the AC system controls, and is labeled with numbers and symbols to indicate blower fan speed.
  • What happens when you throw a rod?

    The motion of that piston is what makes the crankshaft turn--and ultimately what makes the car move. The metal part that connects the piston to the crankshaft is called a "connecting rod." RAY: When you "throw a rod," it means that one of these rods has literally broken off. When that happens, one of two things occurs.

Updated: 3rd December 2019

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