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Nissan Maxima Ac Compressor

Diagnosing Your Nissan Maxima AC Compressor

Your car's cooling system depends on several interconnected parts-one of them is the Nissan Maxima AC compressor. Located at the core of the A/C unit, it is responsible for moving refrigerant gases throughout the rest of the system. Without this component, you won't have cool air circulating in your car. In order to prevent an uncomfortable riding experience to yourself and your passengers, always be on the lookout for these symptoms and repair the AC compressor as soon as possible.

Scraping sound

If you hear a tiny scraping sound right when you turn on the AC unit and it goes away at the exact time you turn off the component, then the compressor clutch needs to be replaced.

Clutch operation problem

If the clutch operation is not coming on when you turn on the AC unit, test the clutch by applying power directly to the wire on the top front of the compressor. If it comes on with the direct power applied, then there might be an electrical problem. Check for a blown fuse. However, if it still doesn't turn on, then you have to replace the clutch.

Loud knocking noise

If you hear a loud noise when you turn on the AC unit, then this means that the AC compressor is on its way out and needs to be replaced as soon as possible. Do not use the AC until you have bought a new stock as the vanes inside the old one should be coming apart-which explains the noise. The more that you use the AC, the more materials will be released into the cooling system, which would thus cause a blockage. This could get very expensive as you will need to replace all the components in the system by then.

AC compressor not working

Hook up the gauges to the cooling system and turn the AC on. If the AC compressor does not come on, check the pressure on the gauges. The low-temp (blue) side should be around 75 to 80 pounds in order for the component to operate the low-side switch and turn the compressor on. If the pressure is below that mark, then the system should be charged in order to get the switch activated. The low-side switch is there so that if the pressure drops below 75, it shuts down the AC compressor to prevent damage. On the other hand, if the pressure is within the 75- to 80-pound mark but the compressor isn't working, then there may be an electrical problem.

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  • Taking Care of the Nissan Maxima AC Compressor 27 February 2013

    Driving with a functioning air conditioner makes your driving experience a comfortable one. You wouldn't want to drive under the scorching sun on a summer's day, would you? So, you have to make sure that the components of the air conditioner are working correctly, such as the AC compressor. This is basically the one that's responsible for separating low and high pressure from the system. To avoid jeopardizing the performance of your air conditioner, here are some tips on how to take good care of the Nissan Maxima AC compressor.


    Seal leaks.

    One of the most common problems that happen with the AC compressor is leaks from the different seals, which keep the refrigerant gas inside. When you discover that there's a leak, don't hesitate to purchase a new seal to replace the worn one.


    Put the right type of oil.

    AC compressors need a certain type of oil, which depends on their needs. So, when adding oil to the compressor, make sure that it's the right one for your vehicle.


    Maintain proper levels of refrigerant gas.

    Aside from oil, the AC compressor must maintain the correct level of refrigerant gas to avoid any damage. Other than maintaining the right level, you must also see to it that you have the appropriate kind for your car. You can ask a professional mechanic to help you find out what type your vehicle needs.


    Run the AC compressor on a regular basis.

    There's no definite time when the compressor is going to malfunction because it depends on its usage. But to keep it in good condition throughout the year, it's a good idea to run the AC compressor frequently so that the system would work properly. This will also lengthen its longevity. It's recommended that you run it for at least 10 minutes every month.


    Visit a professional mechanic frequently.

    AC compressors actually need regular maintenance, so it's a great idea to visit a professional mechanic every chance you get so that you can keep the compressor from locking up. The usual causes of this situation are due to low coolant level, improper lubrication, or poor-quality types of refrigerant.