Air conditioner not working?

It sounds like it needs a recharge this guide and video can help fix it

https://youtu.be/uZrQCGwXfek

and

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

No cold air-could be out of freon/clutch not engaging due to power issue.

Please run down these guides and report back.

Ok thank you so much ill check it out to see if the clutch is engaging I just recently got the heads done cause it did have less power compared to now and the thermostat I pulled it out when my car was over heating it stayed closed so that causes the heater not to work properly.

1993 Toyota Camry front wheel drive. 200 k miles. Heater works. AC turns on, but does not blow cold air. Coolant reservoir is full.

Hello,

It sounds like the system is low on charge, here is a guide so you can find out, also a guide that deals with air conditioner not working.

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

and

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

Please run some tests and get back to us so we can continue helping you.

Cheers, Ken

Air Conditioning problem
1993 Toyota Camry 4 cyl Front Wheel Drive Automatic 180 K miles
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I have a 1993 Toyota Camry 4 cyl with 180K miles. The car runs great and I keep it serviced. I just had the AC compressor and drier replaced. My problem is that the AC works great in the morning and late in the evening. I live in Central Florida and when I try to use the AC in mid afternoon when the outside temp is around 85 degrees or higher, the AC does not work. Is there some type of exterior temperature sensor that would disable the compressor during high external temperature days? I love the car and plan on keeping it a while but this noon day heat is brutal. Thanks ChiefJBJ

check freon (134A) if full and make sure that the system was vacuumed real good before the freon was added with oil

also check to make sure the radiator fan is coming on.

Air Conditioning problem
1993 Toyota Camry Front Wheel Drive Automatic
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Hi
My wifes car - 1993 Toyota LE V6 - with about 80,000 miles on it, runs really well. It is serviced at a dealership every time service is due.

When we turn on the A/C it will put out cold air (as it normally did) for about 20 minutes. Then if we just leave the A/C running (with the windows down to cool ourselfs off) In about an hour it will start putting out normal cold air - for about 20 minutes.

The dealer gave it a freon charge and sent us on our way - didn't help.

I have experence working on my own cars - about 40 years. Could you tell me what I could check. I have the shop manuals. Dealership said it would cost $1700.00 (without looking at the car.)

Thank you for any help you can give.
Stan

Hi Stan,

When the AC stops cooling, is the compressor working?

Are the radiator and condenser fans working?

You might need to check the thermistor.

I hadn't but I will. I will let you know what I find.
Thanks for the fast reply - I didn't expect it.

Stan

Sorry for taking so long to reply to your advice.

The only thing I haven't been able to check is the thermistor. Can you tell me where the plug connector for it is located?

I wanted to disconnect it and measure the resistance, while the a/c is running. I can put a resistor across the connection on the engine side so the a/c will continue to run.

Thanks,

Stan

Hi Stan,

The thermistor coupler is somewhere between the evaporator and radio panel, behind the glove box.

Are you able to control the temp setting and does it work with a higher setting, ie above 20 degrees?

"Are you able to control the temp setting and does it work with a higher setting, ie above 20 degrees?"

Could you expand on this - I don't understand the '20 degrees part'? Do I need to measure temp.?

1993 camry. ac button blinks on and off. I can depress the button off and back on and that takes care of it. Then sometime it flashes continually the I have to cut the car off and restart and that causes the ac to work. Also sometime the light stays on and it just starts blowing hot air. Took it to toyota and they said it was the ac amplifier got that and replaced it but those symptons continue. Also replaced the ac relay in the fuse box under the hood.

Fault is with the A/C switch circuit. It could be a bad switch or a loose connnections somewhere.

Thanks for your reply. is the ac switch circuit one part or a board with several switches attached to it?

It is a separate part attached to the panel.

Is the ac switch a part that can be replaced on its own or is it one that needs to be tested to make sure there are no shorts in it? One last question where is it located under the hood or behind the glove compartmentg? Thanks again for your help.

The A/C switch is the button that I am referring to. It can be replaced on its own.

You can try bypassing the switch and if the A/C works correctly, then the button/switch is definitely faulty.

I have '93 toyota camry with 190k miles on it. The ac seems working during winter and blows hot air pretty good. During summer, the air conditioner doesn't work, and gives hot air. I would greatly appreciate your suggestions regarding what might be the problem with ac and how can I fix it?

Hi there,

The A/c and the heater are two separate systems, i would get the refrigerant checked for a leak, as this is the most common cause of this problem, start here.

mark (mhpautos)

I bought this car used and the air-conditioning was not working. I am student and want to know the cheapest way to fix the this. Please help.

Hi there,

You will have to see if there is any refrigerant in the system, a check with a Hi-low gauge set will tell the tech what is going on, do this first.

mark (mhpautos)

I bought the camry le during the winter so i didnt know the air conditioning did not work right. I did try the air conditioner and when i tried it it worked fine. Well summer came around and i notieced that as it works great as long as the outside temp is below 70 degrees. When its hotter then 70 degreesit it doesnt blow out cold air. In fact it blows warm air. If you have any insite as to what the problem is i could really use it. Thank you.

Check the high and low pressures, could be freezing up due to air and moisture turning into ice and blocking off the orifice tube. Could also be the air blend door stuck in the heat position

Air Conditioning problem
1992 Toyota Camry 4 cyl Automatic 171640 miles

My AC light is blinking and blowing hot air, i put a charge on it and it took the whole can, but still blowing hot air..

Hi ashleyymarie17,

The AC light flashing could be due to :
1. Compressor clicking in and out due to excessive freon.
2. Slipping drive belt, could be faulty crank pulley.
3. Faulty A/C amplifier
4. Faulty rpm sensor ( if equipped with power steering)

I have a '92 Camry station wagon. 4 cyclinder. 260,000 miles. I have the 134A system. Air-conditoner cools for about 30 minutes, then gradually turns warm. I will let the car sit for a few hours, start out again, and the whole thinsg starts over again. Cool to warm. My mechanic keeps adding stop leak, but we can't figure out the problem? Thanks

Is it losing the 134a? I wouldnt add any more stop leak to the system. Sounds like you need to find a tech that is willing to locate the leak.If it is holding, could be the expansion valve

Yes, we add a can of 134a stop leak every month, but we can't find the leak. Can we deduce that since the air-conditioning it works for at least a half hour that it's not the condensor or the compressor?

Not necessarily.Have the tech check the evaporator core, it is located under the dash inside the car

I am not getting any pressure on my gauges which tells me that I do not believe the air conditioner compressor coming on. could you show me the electrical part of it the pressure switches? any necessary information relays, fuses? I really appreciate you in this matter.

Hi,

With the engine off, you should still see pressure. It's called static pressure. If there is nothing, the system has no charge, most likely the result of a leak.

Let me know if that is the case. I have sensor info, but doubt that is the issue.

Here is a link that explains what to check when the A/C isn't working:

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

Let me know exactly what is happening and what you have already done and found.

Joe

Yes Joe, I do have static pressure with the engine off and everything off it's reading kind of low, but it do have a reading on it so I do believe it's not the high pressure switch I can rule it out and I think it might be the low pressure switch or for some reason the compressor is not engaging cycling cycling on and off.

I attached two pictures related to the switch. Take a look. The third pic explains minimum and max pressures.

What is the static pressure? Also, what is the temperature where you are located?

Let me know.
Joe