Speed Motor
Speed Motor
2000 grand am blower motor speed control switch or resistor?
My fan is only working on 3-5, 1 & 2 have been out for about a month. O'Reillys said I may need a resistor however, wouldn't it just be the control switch since it still does work on certain speeds? Apparently, O'Reillys carries the resistor yet no place I can find other than the dealership carries the switch. I need help. What will this cost me?
It is more likely the resistor than the switch. But the only way to tell for sure is to check the wiring to the resistor with a 12-volt test light to make sure it's getting power from the switch during each speed setting, or check the resistors themselves with an ohmmeter.
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Hydraulic Motor Speed Sensors Explained in Laymans Terms
Hydraulic motors are finding their way into more and more places in recent years and there is a good reason why. They are far more compact and can produce more torque in a much smaller sized unit. Electric and fuel powered motors are also noisy and produce heat. Also, both of these types of motors often require some type of transmission system to regulate torque.
The Problems of High Pressure Hydraulic System
However hydraulic motors do have their own shortcomings that have to be dealt with. For instance, they require a source of high pressure hydraulic fluid be ran to them for the motor to operate. High pressure hydraulic fluid presents its own problems in handling and moving it.
A Tightly Sealed System
For instance, due to the fact the a hydraulic motor contains and is powered by high pressure hydraulic fluid they need to be tightly sealed. This by nature prevents the use of a standard speed sensor that uses a cable that is connected to a gear in the motor.
The Hall Effect
So what is the answer? The answer is to use speed sensors that use magnets to gage the speed of a hydraulic engine from the outside. So how can a magnet gage the speed of something? When an electrical current is ran perpendicular to a magnet, the current will be effected when the magnet is in the presence of a ferrous metal such as iron or steel. Its called the "Hall effect"
Counting Gear Teeth or Turbine Blades
So a magnetic sensor is used to count the rotations of a gear or a turbine blade that is in the hydraulic motor or the hydraulic fluid line. Every time a tooth of the gear or a blade on the small turbine passes the magnetic hydraulic motor speed sensor, an electric pulse is created that is then sent by wire to a speed gage.
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Written by Rosa Telipten. Find the very best info on Hydraulic Motor Speed Sensor as well as Speed Sensor
Speed Motor
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