Troubleshooting & Repairing the Nissan Xterra Air Conditioning An awesome member of our community made this guide. It is not managed by iFixit staff. The 2000 Xterra's Air Conditioning is sometimes cool but may not work other times. The Air Conditioning System will get cold when the Compressor Clutch is engaged but the clutch quickly quits and just blows semi cool to warm air. One possible cause of this symptom is that the Thermistor may be defective. Here is how to troubleshoot and replace the thermistor. The Thermistor connector is located below the glove box. You can see the white connector hanging out from under the dash. The purpose of the Thermistor is to keep the Evaporator from freezing. It does this by measuring the temperature and turning off the Compressor when the Evaporator gets below approx. 40 degrees F allowing the Evaporator to defrost. Locate your Air Conditioning Compressor. The clutch is the center area. If the clutch is engaged the center area will be turning.

It will be turned off by the Thermistor to prevent the Evaporator from Freezing. Here are the tools that you'll need to complete this guide. Test the thermistor by turning the Engine ON and the Air Conditioner ON. Using a Voltmeter (set to DC Volts), the Green/Orange wire will have battery voltage (around 13.5vdc) from fuse #29 in the under hood fuse box. The Blue wire will have battery ground from the AC control assembly. The most important wire is the Blue/Black wire. how long does it take to install ac unitThe Voltmeter will show less than .5 volts with the thermistor on (temperature above 45 degrees F). how to recharge a house ac unitIt will show a nominal 4-5 volts with the thermistor off (temperature below 40 degrees F).how much does it cost to repair an ac unit

During inital operation, the temperature at the evaporator will be above 45 degrees and the Voltmeter should read less than .5 volts. When the temperature of the evaporator is below 40 degrees F, the Voltmeter will read 4-5 volts which turns the Air Conditioner Compressor OFF. This keeps the Evaporator from freezing. If your Thermistor is reading 4-5 volts when you first turn the AC on then your Thermistor is defective and needs to be replaced. Replacing the Thermistor requires removal of the glove box. Remove the four upper screws and the two lower screws as indicated. Using a philips screwdriver, remove three screws. (as indicated by the orange circles) Using a 10mm socket, remove four bolts (as indicated by the blue squares) The two on the right are easy to see but the two on the left are difficult to see and are behind structure. Here's were it can get tricky. Of course the correct way to replace this is to completely evacuate the system and remove the evaporator but with a little ingenuity you can have it replaced in 10 minutes.

Open the evaporate shell by splitting the halves. I used a spring clamp, backwards, to help me hold the halves open. Using a long pair of needle nose pliers, gently work the Thermistor out of the evaporate fins. I purchased a new Thermistor for $52 at the dealership. Install the new thermistor by using the Long Needle Nose Pliers to insert into the evaporator fins. Removing the connector from the bracket was difficult and I broke the bracket. I was happy to see that a new a mounting bracket came with the new thermistor. You will need a small sheet metal screw to attach the mounting bracket in a hole next to the existing mounting bracket. They provided a hole for you to mount the new bracket. ( I guess they al To reassemble your Air Conditioning System, follow these instructions in reverse order. 12 other people completed this guide. Past 24 Hours: 49 Past 7 Days: 535 Past 30 Days: 2,619 It looks like you're new here. If you want to get involved, click one of these buttons!

PT Cruiser Air Conditioning Questions/Problems hi my wife has a 2006 2.4 touring edition with 36.6 k miles on it and the AC knocked off today...i cant find any relays or anything in the fuse box that seem to have anything to do with the HVAC system except for a single 10amp fuse that is fine...fyi when i have the hood up and the ac on i dont even hear the compressor cutting in and out...i dont think that it is low on coolant because in my previous vehicle experience they would gradually become less and less effective until they quit cooling because of coolant loss....any help would be appreciated thanks guys and galsSee Also: PT Cruiser Electrical Problems Sign In or Register to comment.Nissan » Altima » 2013 » AC / heater Notes: The 2013 Nissan Altima has multiple problem trends including the CVT transmission, and now that this model is out of warranty, it earns our "avoid like the plague" badge. Owners complain about vibration and transmission failure related to the CVT (Continuously Variable Transmission), a whining noise from the power steering pump, and constant windshield problems that appear to be the result of poor design.

Be warned: the 2014 & 2015 Nissan Altima appears to share these same problems. Air Conditioning Not Cold? There are several reasons that may explain why your air conditioning system is blowing warm instead of cool air. The first possibility is that there is a refrigerant leak. The leak may be found in the evaporator, condenser or hose in which case you should bring your car to a mechanic to be repaired. Another reason that your air conditioner may not be blowing cool air is because the compressor has gone bad. The compressor pressurizes the refrigerant and pumps it throughout the AC's necessary components. Because everything revolves around the compressor, if it is faulty then the air conditioning will not work correctly. Usually there will be a loud noise when you attempt to turn on your air conditioner if the compressor is broken. Finally, another problem that may be occurring with your air conditioning system is that there is a clogged orifice tube. This is located between the condenser in the front of the radiator, and the evaporator in the passenger compartment.