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Old 09-25-2011, 02:52 PM
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AC quickly cycles on/off?

This just happened yesterday on my 2011 Overland with hemi: the AC cycles on for a couple of seconds, off for a couple of seconds. I can hold my hand in front of the vent and feel cold, room-temp, cold, room-temp air.

I was cruising at a steady 55 MPH. The climate controls were set for manual (not auto), AC, and panel mode. I had TSB 18-035-11 done a few weeks ago.

Anybody else?
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Old 09-25-2011, 02:58 PM
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Re: AC quickly cycles on/off?

Quick cycling AC is normally caused by low refrigerant charge.
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Old 09-25-2011, 10:19 PM
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Old 09-26-2011, 08:37 AM
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Re: AC quickly cycles on/off?

Low charge. AC systems are closed systems and should never need recharging. There's a leak somewhere but in a car they are very hard to find. Recharge it and if it's a slow leak and you have to only charge it once a year or so go with that. If it's a larger leak you may need to have the leak found and repaired. If it's in the evaporator under/inside the dash, it gets expensive.
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