To much heat, and the pressures builds. Honda calls it a 'safety valve'. Can you give me some advice; tell me what to look for at this point? I am now waiting for the special order to arrive. . I am not sure the actual purpose and exact function of this valve.
It never would cool properly. I estimate the valve was open at approx. This made me a little paranoid. Can you suggest a ball park optimal high side pressure I should look for while adding. Monitor the high pressure, and stop if you see more than 350 psi on the high side. I still have about 2 ounces left. How much if any do you think I should replace, and, should I use the oil from last year having already been opened.
After adding some refrigerant and stabilizing the system I took some new gage readings. Any other precautions I might take? The valve release at lower psi. I noticed the low side line while operating to be cold and slightly frosted and the high side line warm to hot. Before I recharge can you suggest anything more I might look out for to avoid this problem in the future? I then replaced the compressor, receiver-dryer, put in ester oil and installed the R-134a service ports. We test systems with the doors open, fan on high, and the engine speed at 1500 to 2500 rpm for a reason. Make sure the fans are working.
Many honda models spec a complete new system for conversion in the factory manual. Thoroughly vacuumed system several times. The end result is the system is running fine but I have no idea how much refrigerant is in the system now. Once I get the system working again, I want to prevent future failures. Not sure why it locked upped. I determined that the compressor clutch was defective. You will want to be careful adding the final charge to this vehicle.
Check out which will have the guages, vacuum pump and can tap. I turned the system off to unplug my low side charging hose and hook up my low side manifold gage for a more accurate low side reading high side was still hooked up. But people retrofit their cars all the time, so I doubt that had anything to do with it. Thanks guys again in advance. Save your money and aggravation and get your parts here if you can!!!!!!!! The best thing to do is flush the entire system, so you know exactly how much oil to add. Now this may be perfectly normal.
Just to clarify, I have one of those short charging hoses with a gage attached to install refrigerant but I prefer to disconnect this once charging is complete and connect the proper low side line from my manifold gage to check pressures. Should I be more concerned about an overly frosted line or line getting less cold during charge? High side would have been more, but the low side shouldn't have come out that fast, although I bet you thought it did. I'm a total one time rookie so it doesn't take anything to surprise me! I'd love to hear any theory!? I assume it is installed as a safety outlet if the pressure within the compressor gets too high? Now, I have no way to tell how much refrigerant escaped I mean, was swallowed! I was forced to go to my local Honda dealer because nobody else had the valve available separately. I put a new valve in and vacuumed and recharged and was able to get pressures to 200psi before it release again. You can road test the vehicle with the hood closed and check the pressures at actual operating conditions.
The current readings are: Ambient temperature- 72 degrees F. Low side line was very cold slight frost , High side line was hot. But, you are going to need to find out why the first one popped. Lastly, a word to the wise. Make sure the condensr fan s are working properly, as this is a cause of many pop offs.
I was calling it by a more colorful name over the last week with no air and 90 degree plus temperatures! No sure what is going on. You have already mentioned correct operation of both cooling fans so I'll pay close attention to this. Hondas have little or no reserve in the condensor, and converting them in hot climates can be tricky. A recent poster had sucess doing this with his honda, try a search. They were happy to do this for free! You had to have air in the system, and air is not condensable. After the final recharge I was able to get the rear to cool some, 82degrees.