car ac not cold

car ac not cold

Car Ac Not Cold

Car Air-conditioning Compressor I get a lot of questions about car air conditioning systems not blowing cold enough. Especially during hot humid summer days. Most people would like to see frigid cold air blasting from their small dash vents instantly upon request. Now that this page is getting some heavy traffic I am adding some additional information and a new “Simple Fixes” video at the bottom along with some related tools and equipment for people who want to take it to the next level. So lets get that cold air back. If we get lucky it won’t be one of the three worst car air conditioning problems on older cars. Remember, when your cars bake in the sun, for even a short time, the heat stores up in large quantities. You must remove this before it starts to feel cool inside. But what if the air doesn’t seem to get cold after 5 minutes? Unfortunately, a variety of factors affect the actual output temperature at the dash AC vents. To follow you’ll find a few examples of common problems that I often discover when inspecting a car air conditioning system not performing as well as it should be. Without a doubt the most common problem that I find is an incorrect Freon charge. The amount of Freon in the system is extremely critical. The manufacturer installs the exact amount that is required for the system to perform at its peak. GM Car AC compressor This exact charge is so critical it is documented in the vehicle’s engine compartment down to the ounce. A few ounces short of a full charge can result in inadequate cooling under high heat loads due to lack of reserve refrigerant. A telltale sign of this condition would be for a compressor clutch to cycle on and off faster than usual. The rapid clicking sound generated from this condition can usually be heard from inside the vehicle. Sometimes when people try to recharge a system on their own they fill it with an AC stop leak product. To much of this stuff can make things worse. In other cases people actually overcharge the system which can cause poor cooling performance just as much as low Freon levels. In extreme examples an overcharge of refrigerant can even cause AC compressor damage and noisy operation. Loss of AC Efficiency Car AC Condenser Not as common as the Freon issue mentioned above, but one common in my area at this time of the year is a radiator or a condenser considerably clogged with bugs, dust and dirt, or road debris and trash. When this junk starts to reduce the airflow that passes through the radiator and then through the condenser it can cause higher than normal high-pressure readings. This in turn can knock several degrees off of the output temperature in the cabin. This is the kind of problem that slowly gets worse over time. It is very rare that people will take the time to check or clean the radiator and condenser. The fleet company I work for has made this operation part of the scheduled service operations. We have a pressure washer and we physically clean the radiator and condenser fins every 20,000 miles. AC Test Gauges Although there are lots of other problems that can cause poor cooling the two mentioned above are ones that I find often. If you think your car air conditioning is not blowing cold enough the first step is to check the output temperature at the center duct with a thermometer. I made a video showing how to run an AC performance test. Make sure the re-circulation or max air mode is selected and the blower is on low speed. 40 – 50 degrees is perfect. On hot humid days in south Florida 55 degrees is welcomed. Step 2 is to have a professional connect a manifold gauge set and get high and low side pressure readings. With these readings a logical path of diagnosis can get your AC blowing cold as it should be. Read more on this subject if you plan on finding a mechanic to recharge the car air-conditioning. I put together a repair modules section on my you fix cars website that talks about the theory and operation of car air conditioning. Understanding how the system works is very helpful for problem solving. You can also head back to this blog’s main page and get some more automotive repair information. In this next video Pat Goss talks about things you can check at home before seeking service. This is good stuff and worth the 4 minutes. Note at the end Pat recommends professional service for charging AC systems. This might be a bit over cautious but he is right that it can be dangerous for inexperienced do it yourselfer’s. Mr Goss is for sure right that putting too much Freon in the system can destroy the compressor. It’s possible to do thousands of dollars in damage by doing it wrong! If you decide to go for it Read the instructions carefully. Tags: Auto repair information, auto repair problem, car problems, diy car repair
car ac not cold 1

Car Ac Not Cold

Hello, Mark I have a 93 Chevy camaro and the A/C was working fine and then the compressor went out on it, I then had the compressor replaced , had a shop vac the system down and then they added freon, it worked great for one day and then now this is what it is doing… When you start the car the a/c works great then when you start to drive it above 35mph it will stop blowing cool air, (it still blows just not cold) the freon is not low had it checked by two different places.. But I don’t think it is freezing up because when the are is working it will get condensation on the line.. Plus, I can turn the a/c off and then shut the car off and start it right back up immediately and turn a/c on and it will work fine again until I start to drive over 35mph .. (not exactly at 35mph) but normally. I have also tried just turning the a/c off and back on with out shutting car off and it does not change. Have also tried turn car off with the a/c still on and starting the car back up and it still blows warm air. The only way it will start blowing cold air is to turn the a/c off and then the shut the car off and the restart …Its kinda strange to me and I have already spent a lot of money on trying to get some a/c in my car.. Do you know what it could be I have been to several shops and I just don’t think they know that much about a/c to be an a/c shop. please help. Its really hot here in Florida and I am in my car all day.
car ac not cold 2

Car Ac Not Cold

Hi Mark, My 2011 Mitsubishi Outlander Sports ES (manual transmission) was involved in a left front fender car accident May 2014. After all the needed repairs has been done, the car is running smoothly. A side note, during the repair process (3 and a half weeks) I would periodically visit the body shop to check the progress of the repair. On one of my visits, I asked the technician supervisor why the entry Air Condition Condenser Assembly (ACCA) has an asterisk beside it, his reply was, the ACCA part was a replacement part, I asked why not use original manufacture equipment (OEM) like the other items on the list. He said that my insurance company approved them of using as such and it’s compatible and cheap to do it plus they (body shop) will backed it up with a lifetime warranty. I took his word for it and like I said above, the car is running fine and smoothly after it was delivered to me. Now, fast forward to February 2015. As a habit, I would turn on the AC of my car during Chicago winter for at least 60 seconds just to get the freon moving. Prior to the accident, I would turn off the AC within 30 seconds because the blast of cold air is too much. Not this time, the air coming out is not cold at all. I was driving for almost an hour with the AC on the maximum mode and the only thing I noticed was a little tinge of coldness. After I get home, I tried the AC of my daughter’s 2004 Lancer and within seconds it was frigidly cold. I’m not an expert, but, something is amiss. With that being said, my question is, do you think the replacement ACCA is the culprit? The slight cold air I’m getting from it appears to be a leak somewhere? I just need to hear your professional input, before I have a diagnostic done to it.
car ac not cold 3

Car Ac Not Cold

2003 Chrysler TC LXi with 130k miles. Recently took a 800 mile trip from GA to MI. AC worked fine all morning but somewhere around midday I noticed the air coming out of the vents was definitely not cold anymore. It was mid 90 degree temps outside by this time. The driver’s side has not been cooling as well as the other zones for a while now but now all zones were blowing kind of cool but nowhere near normal cooling temps. This problem went on for the next several hours. I noticed at one stop to eat that there was a large pool of condensation water under the car after it had sat for about 30 minutes which led me to believe that at least something was getting cold. I would occasionally feel a quick burst of cold air coming from the vents and turning off the AC button and then turning back on would result in about 20 seconds of cold air but then it would return to just blowing room temp air, not hot air. We were still driving at sunset and all of a sudden the air got very cold again. Outside temps were still mid 80s but the sun was no longer beating on us. I also heard some plastic “popping” noises from behind the dash like something had been stuck and had just freed itself. The AC worked well during small, hour long or less, trips around time while in MI. The “issue” returned during the trip home to GA. The next day the wife is driving around town and says the AC is working normally again. Any ideas or suggestions regarding what issue(s) I might be looking at here? The driver’s side is still not cooling as well as the other zones. Relays? Some sort of temp sensors? Less than $500 fix? Thanks.

Car Ac Not Cold

Car Ac Not Cold
Car Ac Not Cold
Car Ac Not Cold

Published on Jun 24, 2017 | Under Car | By michael ellis
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