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Air Conditioning (A/C) Trouble
Hello,
I'm really hoping that someone out there can help me find a solution to this problem that I'm having with the A/C in my Jeep. I recently purchased this Jeep, so I don't know much about its service history. The problem is that the A/C compressor only kicks on when the control is set to 'defrost' mode. In any other mode, the A/C will not come on. I took the Jeep down to a local quick lube shop to have the system evacuated and recharged, hoping that low refrigerant might have been part of the problem. This, however, has done nothing to solve the problem. The guy told me that he pulled out just over 16oz. of refrigerant and the total capacity is 24oz. so, it was a little low. It might just be placebo, but the air does feel cooler. It is diffifult to feel that cold air on these hot days, however, when it is coming out on top of the dash. Any help or suggestions will be greatly appreciated. |
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#2
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....by the way, this is a 1999 Jeep Grand Cherokee
wrote: > Hello, > > I'm really hoping that someone out there can help me find a solution to > this problem that I'm having with the A/C in my Jeep. I recently > purchased this Jeep, so I don't know much about its service history. > > The problem is that the A/C compressor only kicks on when the control > is set to 'defrost' mode. In any other mode, the A/C will not come on. > I took the Jeep down to a local quick lube shop to have the system > evacuated and recharged, hoping that low refrigerant might have been > part of the problem. This, however, has done nothing to solve the > problem. The guy told me that he pulled out just over 16oz. of > refrigerant and the total capacity is 24oz. so, it was a little low. > It might just be placebo, but the air does feel cooler. It is > diffifult to feel that cold air on these hot days, however, when it is > coming out on top of the dash. > > Any help or suggestions will be greatly appreciated. |
#3
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3020i don't know about your state but in mine a quick oil change place
cannot do a/c work the system needs to be tested correctly with dye or a sniffer you have a leak for sure > wrote in message ups.com... > Hello, > > I'm really hoping that someone out there can help me find a solution to > this problem that I'm having with the A/C in my Jeep. I recently > purchased this Jeep, so I don't know much about its service history. > > The problem is that the A/C compressor only kicks on when the control > is set to 'defrost' mode. In any other mode, the A/C will not come on. > I took the Jeep down to a local quick lube shop to have the system > evacuated and recharged, hoping that low refrigerant might have been > part of the problem. This, however, has done nothing to solve the > problem. The guy told me that he pulled out just over 16oz. of > refrigerant and the total capacity is 24oz. so, it was a little low. > It might just be placebo, but the air does feel cooler. It is > diffifult to feel that cold air on these hot days, however, when it is > coming out on top of the dash. > > Any help or suggestions will be greatly appreciated. > |
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#5
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"Steve" > wrote in message ... > wrote: > > > Hello, > > > > I'm really hoping that someone out there can help me find a solution to > > this problem that I'm having with the A/C in my Jeep. I recently > > purchased this Jeep, so I don't know much about its service history. > > > > The problem is that the A/C compressor only kicks on when the control > > is set to 'defrost' mode. In any other mode, the A/C will not come on. > > I took the Jeep down to a local quick lube shop to have the system > > evacuated and recharged, hoping that low refrigerant might have been > > part of the problem. This, however, has done nothing to solve the > > problem. > > Excuse me, but DUH!! If the A/C worked in ANY mode, then its not a > problem with the refrigerant system. Its a problem with the CONTROL > system- possibly the mode selector switch (assuming this vehicle doesn't > have an automatic climate control system). > > > > The guy told me that he pulled out just over 16oz. of > > refrigerant and the total capacity is 24oz. so, it was a little low. > > It might just be placebo, but the air does feel cooler. > > Which absolutely did NOT warrant an evacuation and complete recharge. > These stupid quick-lube places should be run out of buisness- the amount > of damage they do to otherwise healthy vehicles is appalling. If they > don't know the proper procedures to place guages and thermometers on > the system to determine the state of charge, and then know how to simly > ADD refrigerant instead of wasting your money by doing an evac and > recharge, then they shouldn't be touching an A/C system! You don't know if the service guy did put a thermometor on the system. He might have done so, or he might have put a quick-readout guage on the system and seen it was low. In theory they should be able to pull all the refrigerant out of the system with a machine, then put the same refrigerant all back in plus what additional was needed to get the system to the proper refrigerant level, in probably the same time as adding refrigerant. I don't know if the usual practice at these places is to just dump the refrigerant to the bottle that goes to the refinery, though. However, to be perfectly frank, if they are reusing the customers's refrigerant in his own vehicle, then that is a much better system than using thermometers and such. With the thermometers your only getting a close approximation of the system capacity, not the exact amount. Even at a good A/C place it is unlikely your going to get the master A/C mechanic to be doing a simple topping off of a low system, instead your going to be given the entry level boob who may or may not be any good. I'd rather have him working off very simple diagnostic instructions (look at that guage, turn it off when the guage says 24 ounces have gone in) than complex ones. Also, to be frank, checking the A/C system state of charge should be SOP at any A/C repair place. Not because it has anything to do with the problem, but because it is very quick and easy to do, and if the tech discovers a leaking system, then he should sweep the system for leaks. This is a good-for-the-environment sort of thing that helps all of us. Ted |
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