why is my Honda Accord AC blowing hot air

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a level surface with the engine off.
• Disconnect the negative battery terminal to ensure safety.

2. Recharge Refrigerant

• Tools Required: Refrigerant gauge set, R-134a refrigerant.
• Locate the low-pressure service port on the AC system.
• Connect the refrigerant gauge set to the service port.
• If the pressure is low, add R-134a refrigerant until the correct pressure is achieved as indicated on the gauge.

3. Inspect and Replace AC Compressor

• Tools Required: Socket set, wrenches, torque wrench.
• Remove the serpentine belt by loosening the tensioner.
• Disconnect the electrical connector and refrigerant lines from the AC compressor.
• Unbolt the AC compressor from its mounting bracket and remove it from the engine.
• Install the new AC compressor in reverse order, ensuring all bolts are torqued to manufacturer specifications.

4. Replace AC Relay and Fuses (if necessary)

• Tools Required: Multimeter, fuse puller.
• Locate the fuse box and remove the cover.
• Use the multimeter to test the AC relay for continuity; replace if faulty.
• Check the AC fuse and replace it with one of the same amperage if blown.

5. Test the System

• Reconnect the negative battery terminal.
• Start the vehicle and turn on the AC system.
• Monitor the performance to ensure cold air is produced.