Why is the pulley on my AC compressor not working?
Why is the pulley on my AC compressor not working?
Check the front side of the clutch to examine its condition. Also, find out whether the clutch and the pulley are spinning. If only the pulley is rotating, the compressor clutch is having an issue, which could be stemming from several sources – a blown fuse, bad clutch oil, low-pressure lockout, or an open wire in the oil.
What happens when the air conditioner clutch does not engage?
When power energizes the clutch coil, the magnetic field pulls the clutch in to engage the compressor shaft. If the clutch doesn’t engage, the air conditioning compressor can’t pump refrigerant.
Why is the pulley not engaging the clutch?
Turn the air conditioning controls to MAX AC and start the engine. Then look at the front of the compressor clutch. Both the pulley and the clutch should be spinning. That means the clutch has properly engaged with the pulley. If only the pulley is turning, but the clutch disc isn’t, there’s a problem somewhere in the system.
Where is the air conditioner bypass pulley located?
New vehicles have a single serpentine belt, which actually complicates things a bit. The single serpentine belt, looped around many components at the front of the engine, turns the air conditioning compressor, water pump, alternator, and power steering pump.
What to do if your air conditioner clutch does not engage?
If the clutch doesn’t engage, the air conditioning compressor can’t pump refrigerant. So start your diagnosis by determining if the compressor clutch works. Turn the air conditioning controls to MAX AC and start the engine. Then look at the front of the compressor clutch.
Turn the air conditioning controls to MAX AC and start the engine. Then look at the front of the compressor clutch. Both the pulley and the clutch should be spinning. That means the clutch has properly engaged with the pulley. If only the pulley is turning, but the clutch disc isn’t, there’s a problem somewhere in the system.
Is it necessary to install a compressor bypass pulley in a car?
Yes, one of the advantages of installing a compressor bypass pulley is that it is less complicated than working with your vehicle’s air conditioning system. You will, however, have to have your refrigerant drained by a professional since it is, as mentioned before, a environmental and health hazard.
Check the front side of the clutch to examine its condition. Also, find out whether the clutch and the pulley are spinning. If only the pulley is rotating, the compressor clutch is having an issue, which could be stemming from several sources – a blown fuse, bad clutch oil, low-pressure lockout, or an open wire in the oil.
Can a low pressure switch cause a compressor to go off?
Put the AC on MAX before checking the compressor. Before starting the next step of diagnosis, you should know that a low-pressure switch can create problems with the compressor clutch’s relay in some car models. The system’s computer keeps the relay grounded but it can go on and off due to the bad switch.
How do you connect a jumper wire to a compressor?
Unplug the single wire connector on the front side of the compressor. Take the fused jumper wire and connect its one end to that side of the wire connector that was connected to the compressor. Attach the other end of the jumper wire to the positive terminal of the battery.
Why does my AC compressor clutch not engage?
Look into This! Engaging the AC compressor clutch at home is not rocket science. There are a couple of ways you can fix the problem to bring back the air conditioning system in order. What is the most common reason for an air conditioning compressor not to engage?
Why AC clutch won’t engage If the clutch doesn’t engage, the problem could be a blown fuse, an open in the wire to the clutch coil, a bad clutch coil, a poor ground, or a low pressure lockout. AC compressor clutches receive power in a number of ways.
What should you do if your AC clutch is not engaging?
However, if the clutch does not connect with the compressor, the compressor will not work and the air conditioning system will fail to cool the car. Try checking if the clutch is in good condition by applying these steps: Turn the AC controls to maximum air conditioning.
Why AC clutch won’t engage If the clutch doesn’t engage, the problem could be a blown fuse, an open in the wire to the clutch coil, a bad clutch coil, a poor ground, or a low pressure lockout. AC compressor clutches receive power in a number of ways.
How is the compressor clutch relay turned on and off?
In some vehicles the compressor clutch relay is turned on and off by the low pressure switch and the evaporator temperature sensor. In a computer controlled system, the compressor clutch relay is grounded by the computer. If the fuse is good, disconnect the electrical connector from the compressor clutch coil.
In some vehicles the compressor clutch relay is turned on and off by the low pressure switch and the evaporator temperature sensor. In a computer controlled system, the compressor clutch relay is grounded by the computer. If the fuse is good, disconnect the electrical connector from the compressor clutch coil.
Unplug the single wire connector on the front side of the compressor. Take the fused jumper wire and connect its one end to that side of the wire connector that was connected to the compressor. Attach the other end of the jumper wire to the positive terminal of the battery.
Is the a / C on my Silverado Z71 working?
My 2006 Silverado Z71, 5.3L has A/C acting much the same as “Terry” from 05/June/2018. The difference is the 85 relay terminal is “pulsing” between green indicating a good ground and anywhere from 0.1 to 0.4 V. Would this indicate a bad ground wire coming from the PCM or maybe a bad PCM?
My 2006 Silverado Z71, 5.3L has A/C acting much the same as “Terry” from 05/June/2018. The difference is the 85 relay terminal is “pulsing” between green indicating a good ground and anywhere from 0.1 to 0.4 V. Would this indicate a bad ground wire coming from the PCM or maybe a bad PCM?
