Cadillac 13587668 Air Conditioner Refrigerant Pressure Sensor Assembly

When it comes to the HVAC Pressure Switch, it is threaded onto a Schrader valve and this shows that there is no need for discharging the air conditioning system so as to replace it. Nonetheless, if either extreme occurs, this sensor will protect the system from running. To modify it, unplug the electrical connector from the sensor first. Next, unscrew the sensor from the Schrader valve using a back-up wrench on the fitting for the sensor to avoid damaging the refrigerant line. Then lubricate switch 0-ring with clean refrigerant oil of correct type. After screwing on new sensor threads until hand tight and then tighten securely. Finally, reconnect electrical connector.

To remove the low-pressure switch, start by unplugging the electrical connector and then unscrewing the switch. For installation, screw the new switch onto the threads until hand tight and then tighten it securely before reconnecting the electrical connector. To remove the pressure sensor, unplug the electrical connector from the sensor near the air conditioning compressor and then remove the sensor from the air conditioning line fitting while holding the fitting using an open-end wrench to prevent deforming the pressure line. For installation, install the pressure sensor and then tighten it securely.

The pressure cycling switch is responsible for detecting low refrigerant line pressure and turning the system off and on again to increase the pressure.

Hold the fitting with an open-end wrench to avoid damaging the pressure line.

Start by unplugging the electrical connector and then unscrewing the switch using an open-end wrench.

The 0-ring should be replaced with a new one.

Before removing the pressure sensor, the front of the vehicle needs to be raised and securely supported on jackstands. Additionally, the splash guard between the bumper cover and the subframe needs to be removed.

After raising the vehicle, the right front wheel and inner fender splash shield should be removed.

The first step is to unplug the electrical connector from the pressure cycling switch.

From underneath the vehicle, the electrical connector should be unplugged from the pressure sensor.

Lubricate the new O-rings with compatible refrigerant oil and screw the new sensor onto the threads, tightening it securely.

Unplug the electrical connector from the sensor.

Start by unplugging the electrical connector and then unscrewing the switch using an open-end wrench.

Use a back-up wrench on the fitting to prevent any damage to the refrigerant line.

Start by unplugging the electrical connector and then unscrewing the switch using an open-end wrench.

Install the new pressure sensor and then tighten it securely before reconnecting the electrical connector.

Before starting the removal process, the right front wheel lug nuts should be loosened, and the vehicle should be raised and securely supported on jackstands.

Unplug the electrical connector from the sensor near the air conditioning compressor and then remove the sensor from the air conditioning line fitting while holding the fitting using an open-end wrench to prevent deforming the pressure line.

The new sensor should be screwed in until hand tight and then securely tightened.