Question about 1983 Nissan Sentra
I just bought a second hand Serena. It seems the air conditoning is malfunctioning. The displays are all normal, it shows that it is working but but no matter what temperature I select (18 deg is the lowest), it seems to be blowing the same air, defintely not cold air as I used to get in my Honda Civic. Today was mid warm day with outside temperature of 23 deg C. Can you help? Thank you very much
sounds like a damper door in the front not working properly, these are actuated by the front temp control, the door is operated by either a manual cable, and electric actuator, or vacuum. I hope this helps you zero in on your problem. Merry Christmas
Posted on Dec 22, 2008
SOURCE: I have a Nissan Quest
I know this is late and hopefully you have this fixed, but the problem is probably the air diverter door control. There are 2 doors, 1 front, 1 rear (middle) and they are adjusted by a single control to balance the temp front and back based on the controls. If this goes out, you either are stuck with hot air up front/cold air in back or vice versa. You can try manually moving the doors to see if they are stuck (in the duct work) or test the actual control circuit. Check your tech manual for how to do it.
Posted on Feb 19, 2009
simply "adding a can"is a good way to end up with non-functional A/C. the typical system has high/low pressure switches that enable/disable the system. you need to be at the correct volume of refrigerant as specified on the sticker under the hood. i recommend using the proper equipment, evacuating, pulling a vacuum, and then refilling the system with the appropriate amount.
Posted on Jun 23, 2009
Initially I would suggest a Loss of FREON from the system, but there are also several reasons for the A/c to quit. Freon loss,[Leaking seal, Comp. front shaft seal, Split hose, Holed Condenser, Compressor Realay/Fuse failure, Thermo couple switch].
An easy out, is to Purchase 1 can of Freon with added Lubricant and 1 Can of Pure freon.
Inject the 1 Can with Lube into the High Pressure Side Adaptor Port. Look and Listen for Leaks. Start up, with Blowers on FULL speed, A/c Control on Max. A/c, and Heater Coolant Control on Cold[Blue]
Speed up the Engine to about 1500 RPM. Look to see if the Compressor Clutch on the Front is Engaged and Rotating, if it does wait about 30 seconds, and the Condenser Fan should Engage, continue to run the engine and check the Interior of the Vehicle for a change in AIR flow temperature. If it is cool, but not cooler. Stop the engine, and give about 2-3 minutes before adding more Freon from can 2.
If none of this happens to make it work, then I suggest you go to a Reputable A/c Repairer and ask for a CHECK & ADVISE ONLY,on your vehicle, so as to get an ESTIMATE, for repair of what is apparently defective in the system.
Posted on Aug 30, 2009
Sounds like either your thermostat, which is the least expensive and easiest thing to change, or your water pump, or clogged radiator, which is a whole new world! The reason it wont blow hot, is because you are not getting any water to the heater core. Hope this helps.
Posted on Dec 28, 2009
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