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Hey guys im having trouble with the ac in my 06 with 90k on it. It blows cold while im driving, but the compressor cuts on and off constantly, and it also blows warm when I am sitting still. I was thinking it just needed a recharge, but I tested the pressure and it was right around 50 psi. Im thinking maybe it has air in the lines maybe and needs to be completely cycled? I really don't know. Any advice would be well appreciated. Thanks!
 

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Hi,
i am no A/C expert, but its usually the condensor and evaporator coils being dirty. If its working while driving then it is usually them being dirty. Get a "Full Aircon Service". Which is basically blowing a detergent or a cleaning agent on the surface of both the evap and condensor. Also check your condensor fan. If its blowing at full rpm or blowing at all when running.

In my part of the world it gets very hot and dirty during the summer and it is common to get a A/C service every month to keep it working.

P.S If it was a gas leak, the whole gas would disappear along with any cooling. Micro Leaks are a myth. Second if it was the compressor, it would'nt work at all. So i am confident you are safe in that area.

Sherwan
 

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Typically those symptoms would be conducive to low freon levels, an evac and recharge would be a good step. It could also be the pressure switch on the low side. It's on the passenger side of the engine bay below the power steering reservoir on the A/C line. The switch should be cheap, so to be safe I would recommend discharging the system, replace the switch, then get an evac/recharge.

Slow leaks do happen, mine had a slow leak from the valve on the high side.
 

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Good day all, LOOKS LIKE WE BOTH NEED TO REPLACE THE EVAP

I am replacing my evaporator soon but I need the schematics and detailed proper instructions on how to replace it. There is one FF video on youtube but that does not show all of the work involved.

My ac went dead about 6 months ago and ever since I've been trying to locate the problem. We went to an ac shop and they purged the system and put pressure on it to see it here were any visible leaks. The dye did not show anything in the hood , so when refilling the freon the ac worked perfect for about 4 days then then cold went away again. This must mean that the leak is somewhere else and I figured it must be the evaporator. So I want to replace it .

We tried it once however the evaporator only came out halfway , so there must be something holding it back.

Anybody please your help is apprecaited.

tnx
 

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Pressure is not really an easy way to test freon charge as it is a tricky gas. Ambient temperature plays a huge part in static pressure readings. Even checking pressure while the compressor is running is a difficult way to determine the charge which is why it is filled initially by weight. It sounds like you are just low on charge currently which is why the compressor is cycling often. I would recommend having a shop top up and also add dye to help trace leaks in the future.

Rast- don't be so quick to jump at the evap core. There have been times where a condenser has such a slow leak that it takes time for oil/dye to make its way through the system and out to where you can see it. If the evap core is leaking and you have sufficient dye in the system, you will see dye residue in or around the condensate tube.

Hope this helps.
 

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Hi guys. The topic of air conditioner repair is relevant for me. The aircons were installed a month ago in our office and something is wrong with one of them. I think there are some problems with the cooling system,it reaches to 25 degrees and turns off. The aircons are from the previous office, so it's impossible to return it back to the store, the warranty does not work. I'm waiting for the repair service of air conditioners from these guys socool.sg, I hope they will find the cause of failure and solve the problem.
 
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