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Re: Ac only blows hot air, the coolant was recharged and...
A Lot of the Times The Orifice Tube being Clogged Causes this and Should Be First Check on system, this Unfortunately requires you to Empty the System to Access the Part that is Inside A/C Line.
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You are low on coolant. It needs to be recharged. The pump won't come on if it's low on coolant in order to protect the system as the coolant contains oil to lubricate the system. You can buy do it yourself recharge systems for relatively cheap or go to a shop.
A car's air conditioning system is very technical and has many parts that could be contributing to a malfunction. The solution could be as simple as adding more refrigerant to your A/C system in order to recharge it. On the other hand, there may not even be a problem with the A/C itself, but there could be a problem with the radiator and coolant system. Having the ability to effectively troubleshoot why your car A/C system is not working properly can save you hundreds of dollars that would be spent on a mechanic if you are able to fix the problem yourself. Access J2534 has the function for air condition, such as Diagnosis of cooling electronic, Reading settings cooling circuit,Test servo actuators
Lack of Coolant wouldn't cause your AC to blow hot air.
You may have a vaccum leak in your dash board that is causing your heater to remain stuck.
If not this, then you will have to have your AC recharged. You can purchase a recharging kit from your local auto parts store! Fortunately, your vehicle can use the newer type of AC Recharging kits so you have many options!
does it blow cold ac when the car is started after sittin overnight? if it does and gradually gets warmer as the car warms up, then you may have an air bubble in your cooling system caused by the low coolant level. if it blows warm anytime, then your ac system may need to be inspected or recharged.
AC will not work with temps are cold even when it is turned on. The air is colder cause the temp is colder. The AC cycles in hot weather because the AC charge is low and needs recharging. You will know this if you open the hood run the AC and you will hear the clicking sound of the AC compressor magnetic clutch. You can recharge it easily buy buying a compatible can of refrigerant. I suggest buying the kit with the gage so you don't overcharge the system which will cause freeze ups
if it is the same thing that is wrong with my frontier. check to see if the compressor is turning on when you use the ac. if not you might have a bad connection that is intermittantly preventing the compressor from getting the signal to turn on. get a service manual and a voltmeter and you can fix.
Sounds like your temperature actuator is not moving or your temp door is broken. On max a-c ,coolant is shut off to your heater core allowing only cold air in.
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