Question about 1990 Toyota Camry

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After having my AC system charged, it doesn't get

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Yes to much refigerent would cause poor operation
since it has been retrofited from r12 to r134 you should only fill to 80% capacity
has per retro kit information witch would make your system over byaprox 8 oz
i sugest take it back and put in 19 to 20 oz max and test it out

Posted on May 25, 2011

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  • Tony Sabaris May 26, 2011

    The mechanic took it all out, then refilled it to 24 ounces. It was still running at 61 degrees. I bought a guage and the pressure was reading 35 psi at 72 degrees. I let it out until it read 25 psi at 72 degrees and it is now 12 degrees COLDER ! ! !.at 49 degrees. This is a BIG difference. Do you think I should leave it at this pressure?

  • DON MAJOR Aug 05, 2011

    at 49 degrees idle should be fine
    will get colder when you travel down at hwy speed
    has air moves true condensor

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It is probably overfilled if that is the case. You have an safety cut-off switch that cuts off the compressor when there is too much refrigerant or too little refrigerant. Take the vehicle back to your technician and have him fix the problem. He can relieve some of the pressure until the compressor kicks on again, as long as the additional pressure didn't blow any seals or your compressor.

Posted on May 25, 2011

  • Tony Sabaris May 26, 2011

    The mechanic took it all out, then refilled it to 24 ounces. It was still running at 61 degrees. I bought a guage and the pressure was reading 35 psi at 72 degrees. I let it out until it read 25 psi at 72 degrees and it is now 12 degrees COLDER ! ! !.at 49 degrees. This is a BIG difference. Do you think I should leave it at this pressure?

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Posted on Jan 02, 2017

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My question to you would be are you adding "coolant" to your engine (anti freeze or water) or are you adding freon to your A/C (tip off was the 'three cans').

If you are adding engine coolant, - that is a lot, 'three cans' - and your engine is still over heating, you should get your system evaluated by a pro.

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You have done what you can at this point. It still doesn't work. It is time to go to a professional. It would appear there is a leak somewhere, a leak that you cannot detect, nor repair. Three cans of freon went some where! Your professional AC service man or woman has the equipment to detect leaks, evacuate the system in an environmentally safe manner, repair the leak, if any, effect any other repair that may be required, inject the proper amount of 'sealer' and AC lubricating oil, change the 'drier' and recharge your system to factory specification. At the end of this service, your AC will be in tip-top condition and probably remain there for years. Best of all, you will not accidently injure yourself or your equiment using this process.

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