Why does the clutch not engage in a low pressure car?
If the PCM (powertrain control module) senses low pressure in the low pressure fluid line, it will stop the compressor clutch from engaging to prevent any damage. This is because low pressure = low fluid, and r 134a is also oil/lubricant for the compressor and if you don’t have fluid then you will damage the compressor.
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.
Why does my AC compressor clutch not 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 to do when Clutch won’t engage?
So you need to use a paper clip to bypass the relay switch and force the clutch to engage. You can then recharge the freon and re install the relay switch and it will sense more pressure and the clutch will engage by itself. Loading…
What does it mean when your a / C clutch does not engage?
If the Compressor doesnt engage with direct power from the battery then the Compressor is shot. Sorry also jump the high pressure switch.. IF the still doesnt engage it then you need to run power directly to the AC compressor and see if the compressor engages then.
If the PCM (powertrain control module) senses low pressure in the low pressure fluid line, it will stop the compressor clutch from engaging to prevent any damage. This is because low pressure = low fluid, and r 134a is also oil/lubricant for the compressor and if you don’t have fluid then you will damage the compressor.
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.
How to manually engage AC compressor clutch, the easiest?
There is no need to switch on the air conditioning system for this method to work. Tips – You should route the jumper wire to avoid it getting tangled or interfering with other moving components. It is an ominous sign when the clutch engages but the compressor does not spin. Changing the compressor clutch could be the only solution in this case.
What happens when the AC clutch does not work?
An automobile can have numerous serious problems and a dysfunctional AC compressor clutch is one of them. When this component does not work properly, the engine does not get the cold air flow – leading to some major complications. Knowing how to manually engage AC compressor clutch will help you skip a visit to the mechanic.
How does an AC compressor clutch receive power?
AC compressor clutches receive power in a number of ways. They can activate through a relay that’s energized directly by a proper condition of the low and high pressure switches. Or, the relay can be operated by the PCM which has interpreted the condition of the low and high pressure sensors.
So you need to use a paper clip to bypass the relay switch and force the clutch to engage. You can then recharge the freon and re install the relay switch and it will sense more pressure and the clutch will engage by itself. Loading…