97 Plymouth Breeze won't blow cold air due to freon leak.
I added a full can of freon to my AC system last week and things were fine with my AC until a couple of days ago, when it started blowing out hot air. When I touch the low-side tube, it's not cold or even cool, just warm. This should be indicative of a freon leak, but I'm not entirely sure. I bought a can of freon with Stop Leak in it to try and remedy the problem but I haven't put it in yet. What should I do?
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My lincoln had the same issue, first it was the A/C compressor (original). I replaced it with another one (used) and worked for 1 month. Then back to hot air. "A/C experts" told me the compressor was out again. I took it to a Mexican auto shop, old building where the guy works alone and to my surprise...HE FOUND THE PROBLEM!! There was no freon leaks, the lines were freezing cold inside the motor, checked freon>>full. He then checked the filter. This filter is on the end of the line where it is crimped that allows the freon to flow thru. Im no mechanic so explaining what it is, forgive me. I can only show you...the line is silver ad in front of you by the radiator, and its the same tube that goes to where you plug it to add freon. There is a filter that was clogged up and prevented the freon from flowing. He removed all the freon, vacuumed out the system/line, and replaced the filter for less that $3.00. Added freon and his cost was $80.00. Thank God for honest people who work hard for a living. I buy the parts, he replaces and I continue to give him my business. Other expensive auto shops with fancy buildings/prices My Lincoln Mark LT now blows arctic cold air!!!
You need check the level with a gage while its on and blowing high on the low side the ac. either it need R134a added ore you might have leak. Best thing is check the level first and if low add the dye to see where leaks out and then top off the ac until full but you cant over fill it ore it loc up the ac pump
Several- The system should hold freon for years without leaking. There are pressure switches and they cut off the compressor with an undercharge and an overcharge. You need guages to measure the charge. There are testers the A/C shops have called "sniffers" which can detect a leak. If you have no leak then you need a technician to add or remove freon to get the concentration right. Or you need guages.
Did you replace the schrader valves (the thing in the inside of the A/C service fittings, you need a special tool to remove and install them) before you recharged the system? They are notorious for leaking if they are old.
If you did not, replace those and try again, if it leaks out again with no evidence you most likely have a bad evap core.
And yes, it's a pain in the ****, plan on it taking a 30 pack of bud light and a weekend to do, or one day and a 12 pack if you are good. Just start taking the dash apart, and may the force be with you. It will be behind the glove box