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AC works but compressor does not kick on
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carribejo
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Jan 23, 2014, 9:48 AM
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AC works but compressor does not kick on
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2006, Jeep Liberty, 3.7 - 42,000 miles. The air conditioner is working but after some time on, the air flow diminishes and not getting cold. When opened the hood the pipes around the compressor were iced up. The compressor is not kicking on HELP! JP
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Hammer Time
Ultimate Carjunky
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Jan 23, 2014, 10:03 AM
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Re: AC works but compressor does not kick on
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I would advise you to change your user name or the spammers are going to have a field day with you. Is the blower working properly and you are getting strong air flow out the vents? ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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carribejo
New User
Jan 23, 2014, 10:27 AM
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Re: AC works but compressor does not kick on
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Yes! Everything mentioned works.... P.s......changed username
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Hammer Time
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Jan 23, 2014, 10:54 AM
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Re: AC works but compressor does not kick on
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It's not making a lot of sense. Everything you are describing points to a lack of air flow across the evaporator causing it to freeze the lines. You could also have an internal restriction causing that but that's much less likely. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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kev2
Veteran
Jan 23, 2014, 11:18 AM
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Re: AC works but compressor does not kick on
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I am NOT sure owners manual will tell - is there a cabin/pollen air filter? a scan for codes- maybe a code won't know till you check, then a set of AC gauges
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Tom Greenleaf
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Jan 23, 2014, 12:19 PM
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Might be my eyesight: You said it works at first, notice frost on lines and coolness plus airflow diminishes. Can also be anything already suggested by HT and KEV but that would also be common for evaporator icing frequently can be caused by low refrigerant charge from a leak. Common leaks to these were the evaporator which is a job. Continued operation almost certainly will make the fix worse. A good clue of evap icing is when you shut the vehicle off it would likely make a much larger puddle of water as it melts. System should shut itself down by itself but most are late. Again all things mentioned checked, restriction, cabin air filter if applicable and I personally would check with a sniffer for refrigerant coming out panel vents. A device that beeps but can be wrong sniffing another something as more than refrigerant can piss those things off. Most A/C is best left to those who have the equipment to test and do the work. Off topic but it was 5 below zeroF here last night so it's amusing to discuss A/C for me right now T
(This post was edited by Discretesignals on Jan 23, 2014, 6:39 PM)
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Hammer Time
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Jan 23, 2014, 12:26 PM
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I missed the air flow part of his question but I specifically asked him about air flow. I would say the cycling switch isn't cutting off when it's supposed to. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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Tom Greenleaf
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Jan 23, 2014, 4:32 PM
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It probably is a CCOT set up. Who knows if LPCO is accurate or if adjustable was messed with? Where the heck is it warm enough to need A/C now? Send it this way! Tom
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Hammer Time
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Jan 23, 2014, 4:40 PM
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He's in the Dominican Republic It is a CCOT system so the cycling switch has to be bad. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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Tom Greenleaf
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Jan 23, 2014, 5:20 PM
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High on the list. Pressures should show it, T
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Discretesignals
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Jan 23, 2014, 6:42 PM
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Or someone jumped the switch or ac relay to get the compressor to work because there is another issue that someone couldn't figure out. Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
(This post was edited by Discretesignals on Jan 23, 2014, 6:43 PM)
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