A/C cuts on and off
05-25-2010, 09:11 PM
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If you are simply talking about the a/c compressor turning on and off then that is normal operation. They cycle on and off, as the cycling of refrigerant is needed. You did say the temperature does not stay consistent... how big of a temperature difference do you notice when it cycles?
05-26-2010, 03:16 PM
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Originally Posted by ShiftGearAP1,May 25 2010, 09:11 PM
If you are simply talking about the a/c compressor turning on and off then that is normal operation. They cycle on and off, as the cycling of refrigerant is needed. You did say the temperature does not stay consistent... how big of a temperature difference do you notice when it cycles?
05-26-2010, 03:24 PM
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Originally Posted by 00CivicSi,May 25 2010, 11:02 AM
If it's getting cold but doing so intermittently, it's probably something electrical. However, it's probably still a good idea to get the coolant checked.
I hope you don’t put Freon in your system.
05-27-2010, 12:59 PM
#15
When your engine is cold (eg; in the morning before you start the car), remove your radiator cap and check to see if your radiator is full. Make sure your coolant reservoir is filled also.
I learned this with another car years ago. If you have air in your radiator, your A/C cycles a lot. Air in your radiator can be caused by a low coolant reservoir, a bad radiator cap or by a small head gasket leak. If your reservoir isn't low but it looks dirty and the coolant level is down in your radiator when cold, you have a head gasket leak.
I learned this with another car years ago. If you have air in your radiator, your A/C cycles a lot. Air in your radiator can be caused by a low coolant reservoir, a bad radiator cap or by a small head gasket leak. If your reservoir isn't low but it looks dirty and the coolant level is down in your radiator when cold, you have a head gasket leak.
06-17-2010, 03:37 PM
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Originally Posted by slalom44,May 27 2010, 12:59 PM
When your engine is cold (eg; in the morning before you start the car), remove your radiator cap and check to see if your radiator is full. Make sure your coolant reservoir is filled also.
I learned this with another car years ago. If you have air in your radiator, your A/C cycles a lot. Air in your radiator can be caused by a low coolant reservoir, a bad radiator cap or by a small head gasket leak. If your reservoir isn't low but it looks dirty and the coolant level is down in your radiator when cold, you have a head gasket leak.
I learned this with another car years ago. If you have air in your radiator, your A/C cycles a lot. Air in your radiator can be caused by a low coolant reservoir, a bad radiator cap or by a small head gasket leak. If your reservoir isn't low but it looks dirty and the coolant level is down in your radiator when cold, you have a head gasket leak.
06-17-2010, 05:31 PM
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Originally Posted by slalom44,May 27 2010, 12:59 PM
When your engine is cold (eg; in the morning before you start the car), remove your radiator cap and check to see if your radiator is full. Make sure your coolant reservoir is filled also.
I learned this with another car years ago. If you have air in your radiator, your A/C cycles a lot. Air in your radiator can be caused by a low coolant reservoir, a bad radiator cap or by a small head gasket leak. If your reservoir isn't low but it looks dirty and the coolant level is down in your radiator when cold, you have a head gasket leak.
I learned this with another car years ago. If you have air in your radiator, your A/C cycles a lot. Air in your radiator can be caused by a low coolant reservoir, a bad radiator cap or by a small head gasket leak. If your reservoir isn't low but it looks dirty and the coolant level is down in your radiator when cold, you have a head gasket leak.
06-26-2010, 04:54 PM
#19
Originally Posted by FitzyS2k,Jun 17 2010, 11:44 PM
what does coolant have anything to do with the A/C??? I could see if you weren't get any heat.
If your radiator is not full of coolant (the rest filled with air), there is less heat transfer, and the coolant gets much hotter. The electric fans blow air through both the radiator and the A/C heat exchanger but if the radiator is much hotter, there's not enough heat transfer in the A/C heat exchanger. If the A/C system gets too hot, it increases the pressure to the point where it trips off the A/C compressor.
That's what happened with my Corolla. The first symptom of a leaking head gasket was my A/C not getting cold. Eventually the leak got worse and more symptoms popped up.
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