Introduction:
The AC speed sensor measures the speed of the compressor and the engine. The air conditioning amplifier compares the speed of the compressor and engine, to prevent the compressor from locking down. The AC speed sensor is otherwise called as a lock-up sensor. It is usually located in the rear or bottom of the compressor.
Many aftermarket AC compressors do not come with a speed sensor. In such cases, you need to install the AC speed sensor from the old compressor. The following steps explain the installation of the AC speed sensor installation from an old compressor to a new compressor.
AC Speed Sensor Installation:
When the original (old) compressor has a speed sensor, reuse the original sensor from the old compressor by following these simple steps:
1. Remove the sensor hole cover and pull out the plug using the Plug Remover Ring (supplied) or pliers, as shown in the following illustrations.
Warning: The compressor is pressurized! Use caution when removing sensor hole cover.
Warning: Avoid oil loss from the sensor opening. Add oil through the sensor opening, if needed. Excess or insufficient oil can cause compressor failure and will void the warranty.
2. Reuse the original sensor from the old compressor and install it in the sensor hole of the new compressor.
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