Losing AC charge
08-01-2017, 07:04 AM
#1
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Location: Lehigh Valley Pennsylvania
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Year: 1998
Model: Cherokee(XJ)
Engine: 4.0L
Losing AC charge
I recently replaced all of the O-rings in the AC system, replace the AC compressor, and had it recharged At a shop. He said that it held vacuum with no leaking. After a couple days the AC doesn't work anymore. I did notice that after running the jeep with the AC on and turning the vehicle off, I could hear a slight hissing noise coming from the dash. Any ideas what it could be?
08-01-2017, 10:12 AM
#4
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If the noise is under the dash, it is probably the connections to the evaporator core or the core itself. Perhaps leaking once they get cold from AC being on, and shrinking a little.
08-01-2017, 10:29 PM
#5
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Year: 1998
Model: Cherokee(XJ)
Engine: 4.0L
That's sounds reasonable. This jeep was totaled for over two years in a field. I did all the frame work and body work. AC compressor was seized. Replaced that and it worked fine for a week. The. Just went warm. The accumulator and lines to the AC compressor get really cold and sweat. Not sore if that's normal.