Question about 1992 Honda Civic

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1992 honda civic lx a/c will not work when weather is too hot

I live in Florida, and when the weather is too hot outside in the afternoon, the A/C will not work, it works in the morning and evenings.
I try to play with the A/C button and sometimes the A/C will come on.
We changed the entire A/C compressor last year because the old one was doing the same.

Any idea?
I live in Northern California and my 92 Civic does the same thing. As soon as the weather gets uncomfortably hot the A/C is random at best, sometimes playing with the buttons makes it work but once it goes about about 95F it basically doesn't work at all. You've had it charged but that didn't help?

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  • Master
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Hi, if the temperature is above 95, this is past the threshold of many AC unit that are using the newer form of refrigerant that is configured for low Ozone depletion deposits. the threshold for most AC units is 98 degrees F and, if the temp is higher than 98 or, just above 95, it will seem like the system is not preforming as it would if the temp was below the threshold(95-98).

This is a no user fault situation and you car is fine. its just the extreme temperatures that will cause the system to overdrive the compressor beyond the threshold. you can combat this issue by purchasing a higher grade refrigerant for your local auto parts store like Auto Zone or O riely's. These alternative refrigerant i speak of are good for areas of the nation that experience higher than normal temps in the summer months.

i would also recommend outfitting the vehicle with a larger AC refrigerant cylinder and booster. this will increase the capacity of your AC and the AC booster will increase the compression, in return, allowing for a colder temperature output form the AC vents. this will help during these grueling summer months.


You can find these parts at autozone.com. look for an AC booster and a 30lb AC refrigerant cyclinder. all this can be ordered online or you can pick it up at your local auto parts store. you will love the booster.

Posted on May 20, 2009

  • Michael Masters
    Michael Masters May 20, 2009

    Hi again. Just to make sure of the AC button switches operational value, i recommend checking this buttons connections. make sure that this button is connected properly and the wires are not lose or worn. replace the switch if necessary and remember to add a high capacity refrigerant cylinder and a AC booster as well. this will Boost your cooling system dramatically.

  • Michael Masters
    Michael Masters May 20, 2009

    Please rate and have a great day:)

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