I have fitted a new compressor & changed expansion valve & other components. but still not getting good perfomance from the ac. can i fit an climatronic ac as in swift into my esteem or can i fit the compressor of baleno to solve the problems
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Re: my esteem ac fails to cool well on hot days
Well i think its a compressor problem. Check out if there is no gas leak in any of the cooling pipes. Its long since brought your esteem, check the blower speed also, it also makes a diffrence in cooling.
Fitting a new climate control system would reduce your mileage and can even make you change your battery and reduce the life of your engine.
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I am concerned that what you have been told may not be exactly true. If the pipe to the inside of the car from the ac compressor is frosting up ( water condensation) then it has a low pressure area which indicates that the gas is getting through the evaporator ( bit inside the car). If the evaporator was blocked then the low pressure switch would switch off the ac compressor (low gas/no gas)
because the gas could not get past the blockage then the high pressure switch would stop the compressor because of high head pressures which can damage the compressor.
The most logical thing is that the TX valve is partially blocked or the thermostat setting is wrong.preventing sufficient gas flow into the evaporator to cool the car.
If you car has a climate control system then that unit may need checking. Best have an accredited ac specialist shop check the system
And to answer you question as to possibility of flushing or cleaning or washing out the evaporator. this is not a possibility as there can be no moisture what ever inside an ac system. However you can check if the cooling fins on the evaporator are blocked with an oily type dust then you can use an ac fin cleaner . This will allow the air to pass through the evaporator fins and help boil off the gas from the TX valve.
You have to remember, your A/C system is a sealed system. If there are contaminates in the system, where did they come from? The only moving part is the Compressor. You might be able to get by for a little while with just changing the orifice tube, or expansion valve and recharging the system. But inevitably you will need to change the compressor. Anytime you install a new compressor you will need to change the orifice tube or expansion valve and the accumulator. Dryer. You will also need to have the evaporator core and condenser flushed out. While I have a system open I also change the o-rings at all fittings. This will ensure many years of trouble free operation.
Yes. A thermal expansion valve (often abbreviated as TXV or TX valve) is a component in refrigeration and air conditioning systems that controls the amount of refrigerant flow into the evaporator. If it is malfunctioning it will limit the amount of freon available to cool the vehicle.
However, the shop should have found this issue initially, so I would only pay for the part; not labor. Call your local dealer (Chevy Tahoe/Suburban is the same) and ask what the cost is. Price sounds high. They are avl. for under $100 online.
Did you change the Receiver/ Drier and the Orfice Tube/ Expansion Valve? The Receiver/ Drier takes moisture out of the system and the Orfice Tube/ Expansion Valve controls the Hot/ Cold air. If that is bad it may not be opening or closing fully which would not let your A/C get as cool as it supposed to.
You say the pressures are good?The low side on this vehicle need to be lower than most,because it has a expansion valve,it needs to be around 30 psi,to about 35,if it is not,and the freon level is correct,then the expansion valve is bad.If this was helpful,please rate,thank you.
either the freon charge is about 1/3 low, or the expansion valve needs to be replaced. Freon is getting into the evaporator, but not in great enough volume to cool the air unless it is coming in cool to start with. check your ac charge, and if it is full, then have it emptied, change out the expansion valve, and recharge it
Could be the expansion valve. That's what allows the temperature to actually drop in the system - the contents of the AC system are under pressure, and are at a certain temperature. When the freon goes through the expansion valve, the pressure drops suddenly and dramatically, which "flash chills" the freon, allowing the air to blow cold. If it fails, you may get lukewarm air from the AC despite everything else working. Also though, check to see whether the AC evaporator fan (underhood) is working - on some cars, if it doesn't turn on, the compressor won't be run enough to cool the air.