A/C not cold

A/C Not blowing cold July 1, 2011

A large number of things and other systems contribute to a properly working A/C system. 

1. The A/C compressor must be engaged to operate. If the A/C compressor does not engage there is a reason the compressor is not engaged, the most common problem is lack of refrigerant which means the system is leaking.

2. If the A/C system is not full of refrigerant the low pressure switch will not allow the compressor to engage.  If the system is just a little low the compressor will engage just a short time then switch off.  This will be heard by a click on, click off repeatedly (short cycle).  If this is the case your system has a leak.  It is best to have a professional look at end evaulate the system.

3. There must be enough  air flow thru the condenser (part located in front of the radiator closest to the grill).  If the electric fan is not on when the A/C is commanded to come on the system will not work properly.  This can cause severe compressor damage.  Also if the radiator or condenser is packed with leaves / debris this will cause the A/C system to not function properly.  The air conditioning system can and will overhead if there is not proper air flow over the condenser.  The problem with this scenario is there is no way of you knowing the A/C system is overheating, there is no gauges or lights to inform you. 

4. There are temperature bled door located under the dash in your vehicle.  If they are not moving properly or sealing completley the can cause warm air to seep into the air box and cause warm air to be felt in the vehicle.  This would be a concern if the system is working properly under the hood. 

If you have a concern with your vehicles air conditioning system, it is sometimes better left to the professionals.  Todays air conditioning systems anr getting more and more complex, even though the same basic principal applies to the system.  Please feel free to call us, to schedule an appointment for your A/C service.  We have the propper tools, systems machines, testers to diagnosis your problem right the first time.

Triangle Auto Service, 4060 N. Elston, Chicago Il. 60618. (773) 539-5858 www.triangleradiator.com, www.triangleradiator.net, www.chicagobrakerepair.com

We are proud to be family owned and operated since 1966!



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