Compressor HVAC: Service and Repair

1994 Ford Aerostar AWD V6-245 4.0LSECTION Service and Repair





REMOVAL
1. Remove battery ground cable.
2. Remove accessory drive belt.
3. Remove refrigeration line retaining bolt from A/C manifold and tube. Plug tube ports in the A/C compressor and A/C manifold and tube immediately to prevent moisture and dirt from entering the refrigerant system, and also to prevent the refrigerant oil from draining from the A/C compressor.
4. Disconnect compressor electrical connector.
5. Remove the four compressor retaining bolts from engine block.
6. Remove A/C compressor.

INSTALLATION
1. Prior to installing a replacement A/C compressor, drain the refrigerant oil from the removed compressor into a calibrated container. Rotate the shaft several revolutions to completely drain the A/C compressor.
2. Add the exact amount of clean specified refrigerant oil into the replacement A/C compressor, which is equal to the amount of refrigerant oil drained from the removed compressor. Plug compressor tube ports and install A/C compressor immediately.
3. Position the A/C compressor into position for installation.
4. Install four retaining bolts to engine block.
5. Connect compressor electrical connection.
6. Unplug compressor A/C manifold and tube and refrigerant tubes. Position A/C manifold and tube onto A/C compressor. Install and tighten retaining bolt.
7. Install accessory drive belt.
8. Connect the battery ground cable.

NOTE: When the battery has been disconnected and reconnected, some abnormal drive symptoms may occur while the Powertrain Control Module (PCM) relearns its adaptive strategy.The vehicle may need to be driven 16km (10 miles) or more to relearn the strategy.

RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.