Engine Size: 1.3
Refrigerant Type: R134
Ambient Temp: 1000
Pressure Low: 38
Pressure High: 190
I need help! I would appreciate so much if some of you guys can give ideas, tips, clues.
I got 2001 Chevy Metro 4 cyl. 1.3l with an AC that works really good when it has Freon; but Freon only last anywhere between 3 to 20 days (letÃ¢ÂÂs say 100 to 500 miles)
ItÃ¢ÂÂs been in 2 different shops already and none of them could find a leak.
The first one could not find a leak and wanted to change the hoses, I really thought the hoses look perfect and donÃ¢ÂÂt show any die so I went to a different shop for a second opinion, this guy agreed with me, hoses are fine.
He already took the evaporator and condenser apart, changed dryer, changed all OÃ¢ÂÂrings and CAN NOT FIND ONE DROP OF DIE ANYWHERE but Freon goes away we donÃ¢ÂÂt know how.
He has charged it and inspected over and over and the leak cannot be seen.
Thank you all very much in advance.
A "good" shop will find it...have to find someone who feels your pain....
The number one A/C diagnostic tool there is- is to know how much refrigerant is in the system- this can only be done by recovering and weighing the refrigerant!!
Just a thought.... 65% of A/C failures in my 3200 car diagnostic database (GM vehicles) are due to loss of refrigerant due to a leak......
Instead of refilling it for now, just put a vacuum on it.....
See how that holds up.
I had a 2000 Metro...same problem. Fought with dealer as they would not listen. They dyed it up; nada. I said compressor shaft seal. They said no. Finally after the 3rd time, they changed the seal. Lasted one month. I demanded a new drier as this took them 2 days to do. It was during the rain season to boot. I had to call Gm customer service and they still fought me on the drier. I explained that the system was open for 2 days during a rain storm. It takes 15 minutes to absorb moisture under these conditions. They finally replaced the drier. After the fourth time, they put on a brand new compressor. Problem solved. Replace your compressor and drier.
Here is a service trick. charge the system, pull the belt off and place a shower cap (not your other half's) over the front of the compressor. Let it sit over night. Place a sniffer into the shower cap. Your leak will be found.
Sometimes you will not see the dye. Depends upon the leak.
Well... when I go back to the shop with no A/C there is only little pressure in the system, so that tells that Freon has gone somewhere but leaves no trace and it has die inside
Vacuum test was done too, it holds the vacuum for I believe two hours. Gauge needle did not move at all.
Well... I replaced the compressor myself, then took the car to the shop for oil vacuum and charge, and so far so good after a week the a/c is running strong and of course colder than before because of the rebuilt compressor. I hope this was the final fix, I'll let you guys know in a couple of weeks.
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