Anyone think of moding their AC to make it blow colder?? Options

[stephen_lee]

Here in TX it gets 110 and HIGH humidity.. so in the middle of the day my ac barely blows 55-60*.. keeping it quite warm in the car still. So has anyone tried adding a second condenser and fan to the AC system? Or is there another way to make it blow any colder? It has a good freon charge, and i already added insulation around the lines to the evaporator..

[azian_advanced]

i'm sure toyota designed the condenser & fan so that the refridgerant will completely condense while using the stock AC compresser even in very hot weather. in this case upgrading the condenser alone won't make the refridgerant any cooler. the easiest way to make the system blow cooler would be to upgrade the compressor and upgrade the condenser & fan (to compensate for the higher refridgerant pressures). but i would prefer insulating the car and tinting the windows than upgrade the AC system since these don't cost any hp from the engine. i use a 2-way alarm/starter to prestart the car so it's cold when i get in which helps a lot, especially when my 2-way remote displays the interior temperature so i know what i'm getting into before getting into the car.

[match220]

i'm sure toyota designed the condenser & fan so that the refridgerant will completely condense while using the stock AC compresser even in very hot weather. in this case upgrading the condenser alone won't make the refridgerant any cooler. the easiest way to make the system blow cooler would be to upgrade the compressor and upgrade the condenser & fan (to compensate for the higher refridgerant pressures). but i would prefer insulating the car and tinting the windows than upgrade the AC system since these don't cost any hp from the engine. i use a 2-way alarm/starter to prestart the car so it's cold when i get in which helps a lot, especially when my 2-way remote displays the interior temperature so i know what i'm getting into before getting into the car.

depending on the cooling system, sometimes you can't just upgrade the compressor or add more refrigerant. You would have to change out the high or low pressure switches too. Adding more refrigerant adds more pressure. So the compressor will come on quick and shut off quick, or too little refrigerant will keep it on longer. The switches on the high and low presure lines are designed to shut off the compressor if the high high pressure switch senses too much pressure or come back on when the low pressure switch senses too little pressure. With that said though, I don't know how the celica cooling system functions because I've never had to troubleshoot it, but I have troubleshot other ones, and that aren't all exactly the same. Some have a high/low pressure switch combo, some have separate, and some just have one.