1999 Jeep Cherokee - AC working intermittently
#1
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Model: Cherokee
1999 Jeep Cherokee - AC working intermittently
Hello,
I have recharged the refrigerant in my 1999 Jeep Cherokee and the gauge showed the refrigerant pressure is in the required level (pressure 40 and the gauge stayed in Blue zone). I bought this Cherokee in Dec 2012. Last summer, since I did't use the vehicle that much, I haven't recharged. So it was out of refrigerant for a long time!
My AC is putting cold air when I start driving. After 15 to 20 minutes, the cold air stops. When I turn the **** to regular air (Not AC) and turn it back on to AC mode, it starts putting cold air again. When outside temperature is too hot, this happens more frequently.
I read other threads in this forum that says removing a shim on the clutch assembly might work. It is a bit compicated job to work on the clutch assembly. When I use a screwdriver/hammer to tap one of the projected ends of the compressor/clutch assembly, the clutch will start engaging.
Few other threads in this forum suggested to change the low pressure cycling switch. Can a BAD (faulty) low pressure cycling switch cause the clutch work intermittently?
Any thoughts?
Thanks,
SP
I have recharged the refrigerant in my 1999 Jeep Cherokee and the gauge showed the refrigerant pressure is in the required level (pressure 40 and the gauge stayed in Blue zone). I bought this Cherokee in Dec 2012. Last summer, since I did't use the vehicle that much, I haven't recharged. So it was out of refrigerant for a long time!
My AC is putting cold air when I start driving. After 15 to 20 minutes, the cold air stops. When I turn the **** to regular air (Not AC) and turn it back on to AC mode, it starts putting cold air again. When outside temperature is too hot, this happens more frequently.
I read other threads in this forum that says removing a shim on the clutch assembly might work. It is a bit compicated job to work on the clutch assembly. When I use a screwdriver/hammer to tap one of the projected ends of the compressor/clutch assembly, the clutch will start engaging.
Few other threads in this forum suggested to change the low pressure cycling switch. Can a BAD (faulty) low pressure cycling switch cause the clutch work intermittently?
Any thoughts?
Thanks,
SP
#2
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Join Date: Sep 2011
Location: Riviera, Texas
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Year: 1998 Sport
Model: Cherokee
Engine: 4.0
What kind of gauge did you use? if it was one that comes with the freon it can be reading wrong, They rarely read right. You may need to ad a bit more.
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I used EZ Chill Measure and Charge Can with Inline Gauge (http://www.walmart.com/ip/EZ-Chill-M...Gauge/16930284). I have also used half from a 2nd can.
I am thinking of either taking it to Firestone Auto to do a AC check for $10 or just try changing the low presure switch for $20.
Which one would be a better bet?
Thanks,
SP
I am thinking of either taking it to Firestone Auto to do a AC check for $10 or just try changing the low presure switch for $20.
Which one would be a better bet?
Thanks,
SP
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