Finding leaks in airconditioners in cars
The Interdynamics Multi-shot dye for Ra systems uses internal can pressure to force the dye into your car AC system. With the engine off, put on the UV glasses and shine the UV light on every connection and port.
Air-conditioning system leak detection - Instructions | BEHR HELLA
Unlike the cheaper Haynes and Chilton manuals that cover multiple year models, leaving the exact information you need to fix your car, these professional manuals cover your exact year, make, model. Plus, they contain full trouble code descriptions and troubleshooting instructions. Pricing: Eautorepair. So you have to refer to the factory legends to learn the identification symbols and then refer back to circuit diagrams to find the splice and ground locations.
You can also send an email to our pro for direct assistance! Usually when your vehicle is leaking something, there is an indication of the leak before a problem with the equipment arises. For example, if your car is leaking antifreeze, there are usually drips, puddles, burning smells or steam letting you know there is a problem long before your car actually begins to overheat. Your goal is to simply take the time to check over your engine and vehicle every few weeks and look for these indications of a leak.
Oil leaks are similar in that they usually show signs of a leak before any actual damage is caused. On the other hand, refrigerant leaks in your air conditioning system will do you no such courtesy. There are many different type of refrigerants used depending on the system, and surprisingly enough the air conditioning system in your car actually works much like the system in your refrigerator.
In both cases the goal is to remove heat from inside of a closed chamber, either your freezer, or the passenger compartment of your vehicle. Through a compressor, an expansion valve, and a series of heat exchangers, a refrigeration system can take the heat inside a closed space and put it outside.
The heat is transferred from inside to outside through a working fluid. This working fluid needs to have very particular characteristics in order to function properly in the refrigeration system. This working fluid, or refrigerant, needs to remain a liquid or expand into a gas at just the right temperatures and pressures to make sure the equipment is kept safe in your air condition system and the heat transfer process actually takes place.
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The most common refrigerants used today are kept at high pressures in the systems they are used in to ensure they work properly. This makes these refrigerants turn very quickly into a gas if they are exposed to normal temperatures and pressures that we live in. Not only does the refrigerant in your car turn into a gas if it is let out of the system, its colorless and odorless as well. All of these characteristics make it very difficult to see, smell or hear if you have a refrigerant or refrigerant leak in your vehicle. Mechanics use a few different techniques to help discover where refrigerant is leaking from in air conditioning systems.
The most common practice is to add a special dye to the air conditioning system. This dye is usually very difficult to see with the naked eye, but will glow brightly and obviously when illuminated by an ultraviolet UV light. To discover where your refrigerant leak is coming from, add UV dye to your air conditioning system and enough refrigerant to ensure the compressor actually turns on.
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While the engine is running, have a friend turn on the air conditioning and blower. While he turns the AC on, watch the front of the compressor in your engine bay. The belt should always be spinning the AC compressor pulley, but right when the AC is turned on, the front of the compressor pulley should begin to turn as well. If you can see this happen, then you can ensure refrigerant, and your newly added dye is circulating through your air conditioning system.
After leaving the motor running for a few minutes, up to a few days of driving time with the air conditioning on, park your car in a very dark place like a garage with the lights off.
Car AC Stop Leak
Shine your UV light around the engine bay focusing on the air condition lines around the compressor and the condenser at the front of the car. The evaporator will be under your dash usually just after the fan blower motor and the heater core. This may be more difficult to find but you may find dye in the air vents, on the carpet, or on the cabin air filter. Leak to inject new refrigerant into your air condition system. Not only will you get 2. The leak sealing agent will act as a lubricant for your air conditioning system until it encounters a leak.
At the leak point, the temperature change there will cause a chemical weld sealing the leak guaranteed! Just connect the included coupler, empty the can into your air condition system and enjoy a leak free air conditioning system.
Hello I only noticed that I needed to add Freon to my car because the light came on. It came on the second day I had it.
Superseal Air Conditioning Leak Sealant MRL-3
So is it too late to buy Blue Devil? My mechanic told me to never use these sealing products because they almost always cause more expensive problems. During the injection process, drying agents prevent any unnecessary sealing activity. Also, Red Angel will not clog or damage the recovery unit. It is removed with the reclaimed oil.
Feel free to contact our technical support line at with any other questions. Dorothy, after reading your response, it appears that you are confusing an air conditioning refrigerant Freon leak with an engine coolant antifreeze leak. From your comments you mention the ground being wet and you could see it was halfway gone then completely empty.
Sounds like you are referring to the coolant reserve tank. I had a mechanic add Freon a few days ago. The AC is back to not working. If they tell me it is a leak, can I just add the Red Angel and then get it recharged? They said everything else was fine. Air worked great til a few weeks ago started blowing hot. I checked low pressure and was almost none so I recharged it and it was ice cold but 3 days later was hot again.
What Causes Air Conditioning Leaks in a Car?
I have tried to charge it again and same thing happened. Does this sound like blue devil will work or should I take back to the shop? Check your compressor pulley to see if it is turning. Most likely, according to your description, the pulley will spin for a second or two, then stop. Check refrigerant pressure and add coolant, and check for leaks. Not Helpful 27 Helpful What do you do if the indicator on the AC recharge kit is in the red zone? Just release some of the freon slowly from the low side until the indicator is in the green zone.
Not Helpful 29 Helpful A car's air conditioner will usually go bad over time; it can also go bad if it is used too often or not often enough. Other causes include: physical damage to the compressor or the fan, overheating, extreme temperatures, particle accumulation in moving parts, and foreign objects inside ventilation ducts. Include your email address to get a message when this question is answered. Already answered Not a question Bad question Other. By using this service, some information may be shared with YouTube. Related wikiHows.
Step 1: Use a Leak Detector
Article Summary X To fix your car's air conditioner, start by turning your car on and checking to see if the air conditioner is producing cold air. Did this summary help you? Article Info This article was co-authored by our trained team of editors and researchers who validated it for accuracy and comprehensiveness. Thanks to all authors for creating a page that has been read 4,, times.