A/C compresores y Embragues para Chevrolet Blazer

Chevrolet Blazer A/C Compressor Clutch

You might be surprised by the complex yet easy to understand system that runs the air conditioning in your Chevy truck or SUV model. The Chevrolet Blazer A/C compressor clutch assembly in a Chevrolet Blazer, consisting of the clutch, pulley, coil, and compressor, works when your A/C is powered to create pressure and move coolant throughout the cooling system. You will find that diagnostics and repairs to this system on your Blazer can be quite simple.

You will find the relay in the power distribution box, and the following steps should be used to determine whether your issue is stemming from a relay problem.

• Unplug the relay and check for any wiring damage.
• Using an automotive circuit tester with a vehicle key engaged, test the larger of the four wires. One of the wires should have power, and one should be ground.
• If both wires are reading correctly, turn on the vehicles A/C and check the remaining two wires; again, one should register volts, and one should be ground.
• If power and ground are found in both cases, check for power at the electrical connector on the compressor. If you do not get a volt reading here, you may have a faulty relay.

The coil in your compressor clutch assembly is electromagnetic and made up of a series of fine wires. When you turn on the A/C in your Chevrolet, the magnetized clutch coil attracts the clutch to engage with the compressor rotor and fan belt rotor. The interaction of these four parts is what drives the power and runs your vehicles A/C.

Testing the air conditioning compressor clutch in a Chevrolet starts with a voltage test. For this test, you will need a multimeter set to 20 volts. Remove the plug, and with the A/C running, test the charging system voltage at the harness connector. If power is present, you should do a clutch resistance test. Using an ohmmeter, you can check your coil. The reading should fall between two and five Ohms. If the reading on your Chevrolet model falls within this range, you can ground one of the two clutch wires and attach the other to a 12V source. If all is working correctly, the clutch should click into place along the pulley. If the clutch is faulty, replacing this part is simple, and fixing it will have your air conditioning system running properly again.