A/C light would blink 6 times and then shut off....no cold air
I went to car quest autoparts and bought A/C recharge(R134a for my car and i think its R12 for before 1992 cars). I also bought a gage with hosing and I then refilled it right in the parking lot and the light stopped blinking and cold air started coming out.....YEEEEAA!!!
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Re: A/C light would blink 6 times and then shut off....no...
That is an indication you have a leak in the A/C system somewhere. Take it to a shop and they can add tracer dye to the a/c system and locate any and all leaks present and advise you from there as to what needs to be done and how much.
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Unfortunately, the R-12 refrigerant that your compressor used was phased out on 1994. You will need to an Automotive A/C Shop to have the system evacuated, flushed, vacuumed, retrofitted and charged with R134a refrigerant. This job requires the use of specialized equipment and according to EPA regulations must be performed by a licensed HVAC Technician.
Once your system was retrofitted, if you ever need to re-charge refrigerant. All autoparts carry easy to use, instructions included, R134a refrigerant recharge kits.
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If you have a leak on the system, the R134a refrigerant must be removed by a qualified HVAC technician. He can diagnose the problem more accurrately, then with the system evacuated, you decide wether to do the repairs yourself or let him do it.
If you decide to DIY, you can get a used compressor at the Junk Yard and the orifice tube filter and the Acumulator at the autoparts when you buy the R134a refrigerant and 6 ounces of oil for the A]C system. Ask the store clerk for your vehicle refrigerant capacity, do not overfill system.
The low pressure port should be on the Accumulator, that's the silver cylinder that has the low side A/C line going in to it. You'll see the valve on the cylinder for you to add the R134a, do not aver fill the system. Safest way is to open and close the refill valve and let the A/C run for 2 min and see who cold the system is getting adding little at a time. To much R134a in the system will also give you poor A/C performance, to high of pressure in the system will shut down the compressor also.
Thank you for using fixya and when you think the air coming out of the vent is cold enough, stop charging the system.
used to be a big deal. today, you can buy kit from autozone or other auto store and do it yourself. Need to discharge R12 into reclaimer so it does not go into air and pollute air.
Then, install R134a fittings on lines, add r134a feon in proper amount with new oil. leave old oil in system. you can buy cans with oil already in the can with the freon. probably need about 6 ounces of oil.
lot's of websites tell how to do this. vidoes on line too.