Ac not cold
I had a new compressor and drier installed and it only cools a bit better than before. The problem is that the air never gets cold. After 20-25 minutes it only cools a bit in this 95 degree plus weather where I live. I put a thermometer in the vents to check the temperature and it reads 60 degrees after 20 minutes. I also notice a mildew smell coming from the vents when I turn on the air. Had it checked twice and I am told everything is normal. What could be the issue?
My car has 114000 miles.
My car has an automatic transmission.
Experienced mechanics share their insights in answering this question :
Quite often, issues with maintaining cold air flow with an air conditioner are due to a commonly overlooked issue – charging AC refrigerant.
Although most vehicles (like your Toyota 4-Runner) have a closed-loop AC, when a leak occurs and is repaired, it’s critical to recharge the AC refrigerant.
Other issues you might want to have inspected by a local ASE certified mechanic include the cycling switch, which charges the refrigerant and allows maximum flow, or perhaps there is some sort of kink in your coolant lines.
How to Identify and Fix Common car Problems ?
Our sources include academic articles, blog posts, and personal essays from experienced mechanics :
The most common reasons a Toyota 4Runner ac isn`t working are a refrigerant leak, an electrical climate control issue, or a problem with the air conditioning compressor. You may not realize there`s a refrigerant leak until the air conditioner stops blowing cold.
Leaking or Low Refrigerant The refrigerant, mostly commonly Puron or R410A, is the chemical that puts the whole process in motion. If your central AC is not blowing cold air, the refrigerant may be the problem. The unit could be running low and need additional refrigerant added. The most likely cause of this is a leak.
If your air conditioner is running, but not lowering temperatures inside, one issue could be a blocked or clogged condenser coil. When operating correctly, the condenser fan draws air into the outdoor unit through the condenser coil to pull heat energy out of your home.
The most likely reason your air-conditioner isn`t cooling is the car`s air-conditioner is leaking. The car`s AC system needs freon to lower the ambient air temperature and creates some needed cold air. Whenever there is a freon leak on your car there is no way to cool the air.
The process to put freon in a Toyota Corolla is relatively simple, but you`ll add a refrigerant called R-134a because freon has been phased out due to environmental concerns.
Relevant Questions and Answers :
the most relevant questions and answers related to your specific issue
2008 VW Jetta AC not cold
ANSWER : Hi Allen. By far the best way to have your AC system correctly diagnosed is by having an AC inspection completed first. By having one of our professional mobile mechanics come to your location to diagnose the issue correctly, it significantly minimizes the mistakes in completing the wrong service. In your case, the issue could be as simple as needing to have the AC system recharged, or there is an existing leak that needs to be repaired before refilling the refrigerant. Best economic bet is to have the AC inspection completed first.
Overheats When Blowing Warm With Heat & AC But Not When Blowing Cold AC
ANSWER : Hello, thank you for writing in. There are so many different codes being triggered, that it is unlikely all of these systems are having issues at once. We need to focus in on the fact the engine is overheating at all. You will want to check the level and condition of the coolant and the overflow tank. If the level is full then you may have an issue with the thermostat, radiator cap, or water pump. These can all be tested and changed relatively easily. If the main cooling system is okay, you will want to look into the heater core and climate control module. For more diagnostic help, contact our service department to schedule an appointment.
AC wont blow on max
ANSWER : Based on the information you provided for your 2010 Dodge Avenger. It is likely that you have a leak in the air conditioning system. You may also have a resistor pack going bad, or the selector switch itself could be going bad. To have the problem verified, a certified technician from YourMechanic can come to your home or office to detect any leaks and make needed repairs.
On start AC is working fine, after 5-10 mins i am starting to hear loud fast clicking noises.!?
ANSWER : The compressor clutch on the vehicle may be caused by an excessive clutch to pulley gap or an excessive resistance in the compressor field coil. A check on the gap in the pulley to clutch can be performed by using a feeler gauge and the coil can be checked using a multimeter. If either is out of specs then repair or replace it as necessary. I’d suggest getting your vehicle inspected by a qualified technician, such as one from YourMechanic, to perform these checks and properly diagnose your A/C issue firsthand.
when I turn my ac on my cars idle drop and stalls out and the ac is hot
ANSWER : Hello, thank you for writing in. Although the pulley is still spinning, the compressor has likely failed. If it is not properly regulating pressure in the system, one of the first signs is a warm air conditioner. Considering yours is not cooling off, the pressures are not correct. If you believe the compressor is working correctly, you may want to check for a clogged line before replacing it. Keep in mind, a blocked line has likely put extra strain on the compressor, and may cause premature failure. For more help with testing or replacing the compressor, contact our service department to schedule an appointment.
When I first put refrigerant in my car the ac was really cold after 2 days its still cool but not as cold is this normal?
ANSWER : It is possible that since you had a leaking O-ring, not only did the refrigerant leak out, but the outside atmosphere contaminated the receiver/dryer in your A/C system. The job of the receiver/dryer is to absorb any moisture and contamination inside the A/C system. If your o-ring was leaking for a time, the receiver/dryer may need to be replaced. A contaminated receiver/dryer can will effect the efficiency of your A/C system.
It is also possible you may have another leak somewhere in the system. Try to get your A/C system dye tested. They will put a UV fluorescent dye in the system along with the refrigerant. If there is another refrigerant leak somewhere, the dye will come out with it and be visible under UV light.
If you decide to get this fixed, consider YourMechanic, as a certified technician can come to your home or office to diagnose the issue with your A/C. Good luck.
07 Honda Odyssey. A/C will work sometimes. When working is ice cold. It will sometimes blow cold then warm and then cold again.
ANSWER : Hi there. In most cases, this problem is caused by air flow to the AC condenser. If you have a condenser that is clogged with bugs and dirt this could be the source of your problem as well. It is probably a good idea to have a professional mechanic come to your location to complete an AC is not working correctly inspection.
My car is moving the Ac get cold if I stop the signal or park the Ac get hot
ANSWER : This is a classic symptom is very common. Most likely the cooling fan for the condenser is not turning on allowing the high side of the A/C system to get to hot. This reduces the cooling capacity of your system. The cause can be the fan motor, a cycling switch, or a temperature switch depending on the design of the system in your car.
After looking at the wiring diagram of your Kia Optima, it appears the fan is turned on and off by the PCM (Powertrain Control Module). The PCM receives a signal from a pressure transducer. The transducer lets the PCM know how hot the condenser is and determines when the fan should be turned on. Between the PCM and the fan motor is a relay. Relays are excellent points to diagnose a system such as this.
From the relay you can supply power to the fan motor with a jumper wire and see if it turns on. If it does, you know it is either the relay, the PCM (not common), and the pressure transducer. You can run the car until the A/C system output begins to increase in temperature, then use a test light to see if the PCM is commanding the relay on. If it is, you need a relay. If not, you should begin by replacing the transducer. They are a common failure item, PCM’s rarely fail and are very expensive.
If you need some help with this, feel free to contact a certified technician, like one from YourMechanic. They’ll be able to diagnose the issue with your A/C and help you fix it accordingly.
Good luck!
