Have you had enough with either having to turn off your AC system or enduring freezing cold because of a faulty blower resistor? Are you stuck with a car air-conditioner that only blows cooling air at a high speed? If you are, then it's about time you replace a faulty blower motor resistor with something that works. Here are a few dos and don'ts to help you in shopping for the right one.
- Check the type of blower resistor your car needs. There are basically two types of blower motor resistors, one that uses coils and another that uses transistors. If you're driving an older car, then chances are it's fitted with a coil-type resistor. Modern cars, on the other hand, usually have blowers that are transistorized. You can also double check the type of resistor you have by looking at the part itself. If you see a number of wires hanging from the part, then you'll need to get a coiled one. But if the resistor is simpler in design, then get one with a transistor.
- Count how many terminals your old resistor has and ensure that the new resistor has the same number. Blower motor resistors vary according to the number of prong terminals that they have. They can have either 6, 4, or 3 prong terminals. Just to be sure that you get the right kind, always compare the new one with your old resistor. This will ensure optimum compatibility and smoother, more efficient operation once the part is installed.
- Don't buy remanufactured or rebuilt parts. Although they are cheaper than OEM parts, they are also unreliable when it comes to fit and quality. This kind of auto parts is prone to corrosion damage and it also carries an uncertain amount of mileage. Especially for electrical components, such as a blower motor resistor, it is still best to stay away from rebuilt parts to ensure overall quality.
- Don't settle for a blower motor resistor that is not backed by suitable warranty coverage. The standard for this kind of part is for period of 1-year with an unlimited-mileage. So make sure you don't get anything less. Remember, it's better to get a good warranty to get the best value of out of your part.