Why does my AC clutch not turn off?
Under the hood, I took out the A/C Relay fuse and jumper a wire from one prong to another and the AC clutch engages right away but it won’t turn off (because the wire is not a relay) I replaced the relay with a new one bought from Autozone and it still doesn’t work.
When to move on to the clutch relay?
Move on to the clutch relay if the fuse turns out fine. In a few car models, the power of the air conditioning system flows from the AC switch to the fuse before being transmitted to the clutch oil through the low-pressure evaporator temperature. You have to make sure that the compressor has enough oil to function properly.
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.
What does the clutch do on an AC unit?
What is an AC Compressor Clutch? The AC compressor clutch is the first thing that moves every time you turn on your AC. Think of it as a switch that is responsible for engaging and disengaging the AC compressor pulley from its compressor drive.
Under the hood, I took out the A/C Relay fuse and jumper a wire from one prong to another and the AC clutch engages right away but it won’t turn off (because the wire is not a relay) I replaced the relay with a new one bought from Autozone and it still doesn’t work.
Move on to the clutch relay if the fuse turns out fine. In a few car models, the power of the air conditioning system flows from the AC switch to the fuse before being transmitted to the clutch oil through the low-pressure evaporator temperature. You have to make sure that the compressor has enough oil to function properly.
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.
Why is the clutch not engaged on my gas compressor?
But if the system is low on refrigerant, the clutch will never engage. Some DIYers then hotwire the low pressure switch to force the compressor clutch to engage while they recharge. BAD MOVE. At that point you’re running the compressor with little to no oil.
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.
What should I do if my compressor clutch is not working?
If you’re not getting battery voltage, pull the compressor clutch relay and check for power and ground on the relay control coil terminals in the socket. Wiring varies by make, model, and year. Some car makers trigger the relay control coil ground through the PCM or ECM.
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.
What should the current be on an AC clutch?
One thing for sure, repairing an AC system is no longer a five minute job. To check a clutch coil, I hook up a volt/ammeter power supply directly to the clutch coil, typically should show 3-4 amps at 14.5V, but leave it on for awhile, as the coil heats up, that current should go down. If it goes up, your coil windings are shorting out.
Why is the clutch not engaged on my bat?
When the AC is switched on, the relay snaps on, but the clutch does not engage. If I unplug the low side cutoff switch, the relay snaps off. When I re-plug the low side cutoff switch, the relay snaps back on, but still no clutch. So, do you think that the clutch coil is shot?
How to jump start an AC compressor clutch?
How to Jump AC Compressor Clutch 1 Disconnect Clutch Oil Cable. 2 Make Sure Compressor Have Sufficient Oil. 3 Set the Amount of Refrigerant. 4 Jump Start the Clutch. 5 Frequently Asked Questions (FAQs) How Do You Manually Engage AC Compressor Clutch?
Why does my AC stop working when I jump the relay?
A few hours later my dumb self decided to try to add a little oil thru the low side and it wouldn’t take much (my guess is because it was under pressure). After that ac stopped working again since neither the compressor nor fan come on, only when i take the relay out and start jumping with a wire.
Why is the AC clutch not engaged when the Freon is low?
No, the AC clutch will not engage when the Freon is empty or low. The low-pressure switch will prevent the AC clutch from being engaged, and the compressor will not spin. This prevents the compressor from engaging. The major reason the Freon is low would be due to leakage.