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2000 Altima AC problems Forums > > 2000 Altima AC problems 2000 Altima AC problems
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  #1  
Old 06-12-2017, 02:14 PM
sdelacruz04 sdelacruz04 is offline
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2000 Altima Sedan
 
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Default 2000 Altima AC problems

Before I spend the money to have my car looked at, I hope that someone can help me/give me an idea of what's going on with my AC. When I turn my AC on, my engine shakes the whole car. It blows hot air and will sometimes blow cool air for a few minutes on and off. If I have the car in the shade or the temp is below 80ish {not common in the summer where I live}, it will work and blow very cold air. I have tried adding refrigerant and replacing the fuse...no luck. To recap, my AC only works when it is cool outside or for a few minutes if in the garage or in max shade....not otherwise. Ideas?

THANK YOU!!
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Old 06-13-2017, 12:22 AM
smj999smj's Avatar
smj999smj smj999smj is offline
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The A/C cooling and engine shaking could be two different problems. Does the idle speed go too low when the A/C is on? If so, it could be the base idle is set too low or perhaps the IACV-AAC valve is faulty. A bad engine mount might be another possibility.
As far as the cooling issue, you should really not add refrigerant if you don't know how much is in the system or can view (and understand) the high and low system pressures with a set of gauges. Overcharging can cause issues just like undercharging. If the proper amount of refrigerant is in the system and the compressor clutch is engaging when the system is on, I would make sure the (1) engine coolant is not getting to hot when the system is not cooling as it should, (2) the electric cooling fan is operating and operating at the proper speed when the A/C is "on," and (3) there is no restriction or blockage of airflow through the A/C condenser, like leaves built up in front of the condenser or between the condenser and radiator cores...or bent condenser fins or debris clogging the fins of the core.
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