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Jeep Cherokee Ac Compressor

Troubleshooting Your Jeep Cherokee AC Compressor

Even if you enjoy the great outdoors a lot, you have to agree that there's nothing quite like driving your Jeep Cherokee on a hot summer's day with the air conditioner on full blast. But, it won't be quite as delightful when your AC's compressor stops working. This hardworking component is supposed to take in the refrigerant fluid and cram its molecules together. This compression process transforms the cool, low-pressure liquid into a hot, high-pressure gas that then travels to the rest of your AC's parts to be cooled down and circulated through your cabin. When your Jeep Cherokee AC compressor fails, you'll need to find out why this happened and what you can do about it.

Leaking refrigerant fluids

Because the hoses that link your AC's parts together have microscopic pores, it's only natural that some of the refrigerant fluid seeps out. But, as your Jeep Cherokee gets older, a lot more fluid can leak out. When this happens, your compressor won't have enough liquid to work with, so it stops working. This AC component might even have a low-pressure safety switch that will automatically shut it down to prevent further damage caused by a lack of lubrication.

To find out if your compressor problems are caused by a leaking refrigerant, you'll need to add a refrigerant that's been pre-mixed with a special dye to your AC system. Just turn your Jeep's air conditioner on after your add the dye to let it circulate, then spray some soapy water on your AC's components. The dye will show where the leaks are so you can patch them up.

Compressor clutch not engaging

One of the most common reasons why AC compressors stop working is a magnetic clutch that has failed to engage. This can be caused by a blown fuse, a wiring problem, or something much worse.

To fix this, you'll need to start by replacing the AC's fuse. Afterwards, you should find out why it has blown in the first place to prevent it from happening again. Then, try checking your condenser's wires for any voltage problems. If you see that the clutch is receiving voltage but it isn't engaging the compressor, then the clutch is defective and it needs to be replaced. However, if you hear the drive belt squeal even if the clutch works, then your compressor has seized up. You'll need to replace it with a new unit immediately.

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  • How to Ensure that Your Jeep Cherokee AC Compressor Keeps Working

    Your Jeep Cherokee's air conditioner has a component that transforms the refrigerant from a cool, low-pressure fluid into a hot, high-pressure gas that's ready to be cooled down and distributed throughout your cabin. This hardworking component is called the compressor and it requires a little effort on your part for it to keep working at its best.


    Vacuuming the AC system

    Air and moisture can build up inside the components of your air conditioner, eventually forming ice that can block up the AC system. What's more, your compressor works better with less than two percent air inside the AC system by weight. For every one percent increase of air inside the system, there will be a corresponding drop of one degree in the AC's cooling performance. To prevent this, you'll need to remove the air and water with a vacuum pump once a year or have a mechanic do it for you. This will involve removing the remaining mineral oil from the AC system and then flushing it with a solvent afterwards. If you're using a new batch of mineral oil, make sure that it matches the old oil that was in your system.


    Replacing the O-rings

    Your O-ring wraps around the different connections of your SUV's air conditioning system so that the refrigerant fluid doesn't leak out. Because your Jeep Cherokee AC compressor won't work if there isn't enough refrigerant fluid, it's a good idea to replace the O-rings when they're too old. Just be sure that the replacement rings are of the same size since a lot of AC leaks are caused by improperly installed O-rings.


    Running the compressor regularly

    To keep your compressor in shape, you'll need to run it all year round. While this isn't a problem in the summertime, it might seem crazy for you to try and do this during those cold winter days. The good news is that you don't have to run your air conditioner for hours on end. You can just have it on for at least 10 minutes every month and you're good to go. Also, you will also be utilizing your Jeep Cherokee AC compressor when you switch to the heater.