car ac sometimes works sometimes it doesn't
This can happen while driving the car the AC may be working fine then shut off then start again. You will need to know if the air is cold room temperature or hotter than the air around it.
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I had to have the 12v battery replaced in my 2006 Toyota Prius and since then the ac doesnt work.
. It could also be an electrical issue. Is there a fuse or something that could have blown. According to my mechanic it is the AC Expansion Valve.
Up to 25 cash back Sometimes the air conditioner doesnt blow hard then as I am driving it seems to start blowing harder. Here are some pointers that can help you identify why your car AC is not working and how you can fix them. Were all the air vents starting to get warm.
The bacteria from airflow mixes with the condensation from the coils creating a slimy film on the AC fins and producing a moldy smell. There are two pressure states that need to be checked. Other times it doesnt work and no cold air is produced.
When it works it blows really cold. Intermittent cooling is often caused by the components of your vehicles AC system freezing up. At least some of them must be freezing cold.
Next you could have a dirty evaporator coil. Bacteria builds up on the air conditioners evaporator coil in the AC heater box located under your dashboard. 3 Feel the air coming out of the vents.
How long were you driving before the system failed. How Does The AC Work. Low amounts of AC freon refrigerant will be detected by the AC pressure sensor switch causing the AC not to kick in.
Why would a cars air conditioner work great sometimes but other times not at all. If I get back in the car when its still warm it will work if above that notch and if its below that mark it will kick on once it reaches that mark. An evaporator covered in ice cant cool the air so you would have to wait until the ice melts which is why the cold air eventually returns.
When the freon later expands it gets very cold. The most common places where leaks are found are at AC unit hose connections. If your car has a Max AC setting select that option.
When AC works it s still cold. Your Car is Leaking Refrigerant. 206 views Answer requested by.
The refrigerant is what keeps the cabin cool. - 1995 - 2004 Toyota Tacoma. Noise could indicate that there is a problem with your compressor and that it needs repair or replacing.
Low Refrigerant in the AC System This is by far the most common issue as to why your AC is not working. The first thing to do if you experience an intermittent auto air conditioning problem is to take notes. AC Refrigerant is Leaking.
When there is a refrigerant. They did a. 2 Listen for unusual noises coming from the AC.
I guess I just wont be going anywhere during the summer. The heart of any air conditioning system is a compressor whose job it is to compress the freon. Record everything related to the event.
At slow speeds 4 sometimes works. The important thing here is to take steps as soon as you. However it should be a thing of the past after knowing what causes this problem and how to fix it.
Even when it works fine a couple of years back it started making a mildly audible chatteringclattering mechanical sound I suspected then that it was probably degrading. Up to 25 cash back AC sometimes works sometimes do not. Depending on the AC system type you might or might not have an orifice valve inside one of the AC tubes - this will make one part of the tube hot and the other part freezing cold.
For example on the highway levels 3 and 5 work but not 4. While there are a variety of reasons your cars air conditioning might not be operating at top performance the most common are a refrigerant leak an electrical climate control issue or a problem with the air conditioning compressor. Each of these can cause the ac to blow lukewarm or hot instead of cold air.
First it could be low on refrigerant. The AC works only when the in-dash temperature gauge is above the mark right before center 190. Air blown across metal filled with cold freon causes the air to cool quickly.
Sometimes it will work normally blowing cold air. Up to 8 cash back There are several possibilities here ranging from a damaged AC actuator loose electrical connections or a damaged AC control module. Your Car Has a Refrigerant Leak This is one of the most common causes of car ACs not working.
It could be the result of rubber seals and hoses breaking down over time and. Leaks can originate from a number of different places. A couple of things.
There is a good chance your AC compressor clutch has worn enough to prevent it from engaging when hot. Faulty Car AC Compressor. Since there are multiple possibilities that could be causing the AC to not work all the time you might want to have a professional mechanic complete an AC not working inspection to determine what.
If your car AC is not blowing cold air or just simply not working then you might be dealing with one or more of the problems listed below. Some of these culprits are straightforward to repair while others require taking the car to an auto mechanic or an auto repair service such as the Lexus dealer service department. Water on the Floorboards.
JosephEMeehan July 10 2012 312pm 3. Is the air conditioning control panel functioning normally. The most common refrigerant used today is the R134a refrigerant.
A refrigerant leak can occur at any point in the air conditioning process and so its sometimes difficult to pinpoint the exact location of the leak. Other times it wont work after re-starting the car even though it worked fine prior to stopping. How often does the system fail.
After time the film builds up and can clog the drain line. Brought my Toyota rav4 2008 to the service station because of a noise coming underneath the car. If I just push the internal button itll sometimes work immediately but I usually have to push it a few times or hold it down to get 5-15 min uninterupted AC It seems that blowing power level affects it but also the speed of the car.
Faulty AC Accumulator Filter Drier. If your compressor isnt working the air wont get cold. In order to understand your car AC system you have to start at the.
Faulty AC Cooling Fans. Also this happened a couple of months ago in the winter when it wouldnt come on then came back on as if nothing had happened. Which is more likely if it works great sometimes then not at all others.
Typically an iced over evaporator is the culprit. Because it is behind the dash somewhere that has to be taken apart so it will cost more than 500 to fix and the part is only around 40 the last time I checked. It may be that the clutch on the AC compressor is faulty sometimes it doesnt engage or it could be a wire is loose or a loose connector plug next time it blows hot air when it should be cold lift the hood make sure that the clutch on the AC is engaged hope this helpscheers.
And your compressor might not be working because of low freon. So on my way to work it will kick on just after it reaches that mark. I have a 1994 Corolla and the air conditioner will only blow cold for approximately 10 minutes after starting the car.
If you are lucky you may be able to fix it for. When you notice no cold air from the vent outlets go and check the AC tubing under the hood. The car AC sometimes works sometimes it doesnt.
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