Air conditioning not working

Good afternoon,

Are you sure the clutch is engaged?

https://www.2carpros.com/articles/car-air-conditioner-not-working-or-is-weak

Do you have a set of gauges that can read both the high and the low side? I need those readings.

Roy

Hi Roy,

I cannot be sure the compressor clutch is engaged as the center of the compressor spins with the A/C on or off. Might be a clutch less system?

I don't have the gauges to give you the high side and low side pressures. I can only tell you the low side pegged to the red on the AC Pro supplied gauge with the Freon bottle.

The system was working one day, then not the next. It seemed to work later in the evening when the ambient temp was much lower. Today, in the midday heat and sun, it's not working again. I was thinking it might be some sort of ambient temp sensor. but I am just guessing, which is not a cost effective method of troubleshooting.

I am not seeing any issues on-line for 2014 Camry A/C systems, so That's why I figured I would run it past you folks to see if there are any know latent quality issues with this year, make, and model A/C system.

Thanks for your reply. It's looking more like I'm going to have to take the car to a pro with the proper equipment to troubleshoot correctly.

Regards,

Bill Latham

You are welcome.

I agree, let someone diagnose it for you. Get back to us with the results so we can help if you have any other questions.

Roy

My car's A/C seems to work fine in the morning when ambient temperature is cool, but if I try to turn on the A/C in the middle of the day when outdoor temperature is significantly warmer, sometimes it takes awhile for it to respond by blowing cool air before it starts cooling down. Also it has to be at a higher speed than idle for the A/C to start cooling down to a comfortable level. No matter if it's at idle or highway speeds I have not noticed the compressor clutch cycling it seems to be on at all times people with no cooling going on inside the vehicle.

Hi,

It's normal to an extent for it to get cold. However, it's odd that the compressor is staying engaged.

The first thing I would suspect is it is low on Freon. It must have enough to engage the compressor, but may not be working properly.

Take a look through this link. It explains how to add Freon to the system. You will need to get the Freon at a parts store. Try this and let me know if it helps.

If it doesn't, then we need to check low and high side pressures on the system to see what is happening. However, this usually takes care of the issue.

https://www.2carpros.com/articles/air-conditioner-how-to-add-freon


Let me know if this helps or if you have other questions.

Take care,
Joe

Thanks.

If the system is full you could have a compressor that is going out. this guide will help with diagrams below to show you how on your car:

https://www.2carpros.com/articles/replace-air-conditioner-compressor

and

https://www.2carpros.com/articles/car-air-conditioner-not-working-or-is-weak

This video will show you how to fill the system:

https://youtu.be/uZrQCGwXfek

Check out the diagrams (below). Please let us know what you find. We are interested to see what it is.

I have the LE model.
Air flow was restricted, so i replaced the cabin filter, now. It is blowing air pretty strong. A/C is semi comfortable at night , in the daytime with 100° weather A/C does not cool to good. I have checked the A/C fuse inside the car under the dash and it is not burned out, also checked the heater fuse inside the car and is good. Looked for a 50 amp heater fuse in the power distribution box under the hood to check it but it is not in the slots even though the cover to the distribution box shows that there is a 50 amp heater fuse.
Does my car have a relay for the A/C compressor? if so where can I find it? Is there a particular color it will be? Any wording I should look out for ? First picture is of distribution box cover under hood . Secondly is the cover to the fuse box under the dash by the steering column . Both cooling fans are working. Thank you hope you can help me.

You are looking in the wrong direction. First understand that the goal of all automotive air conditioning systems is to lower the temperature of the air by only twenty degrees. That alone is a real big task considering the huge volume of air passing into the car. The comfort comes from removing the high humidity from that air.

Your observation that some cooling is taking place is proof the system is working, so there is no point in searching for fuses and relays. A better observation would be to watch the AC compressor to see if it is cycling on and off while the engine is running. If it is, and especially if it is doing that quite rapidly, the common suspect is the system is low on refrigerant. That causes the cooling to take place too soon in the system, meaning the cooling is occurring in the hose under the hood, not in the dash by the incoming air. The proper fix for that is to have the system drained, then the exact measured amount of refrigerant is pumped in. The low-cost approach is to add one can of refrigerant with a do-it-yourselfer kit. If you attempt that, be aware refrigerant is extremely dangerous to work with. It can cause frost bite and blindness. Professionals wear gloves, safety glasses, and a face shield.

Also, be aware that when adding some results in the system working better, adding more refrigerant is worse than having not enough. All A/C systems work on the principle of a liquid becoming real cold when it turns into a vapor. That is designed to occur in the middle of the "evaporator" in the middle of the dash. If the system has too much refrigerant, the liquid will not turn to a vapor until it gets back out under the hood. Besides not cooling the incoming air, that liquid could slosh into the compressor and destroy it. Compressors can only pump a vapor, never a liquid.

Car's AC blows warm air on hot days, when cooler the AC works fine. The coolant is full. Any suggestions?

By coolant you mean engine coolant? of refrigerant? I would as the system is low on charge and if not the compressor is starting to go out. To be sure here is a guide to help us check the high side pressure which will tell us everything we need to know:

https://www.2carpros.com/articles/re-charge-an-air-conditioner-system

This guide can help as well:

https://www.2carpros.com/articles/car-air-conditioner-not-working-or-is-weak

Please run down this guide and report back.