Car AC blowing hot?

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There are many car users,facing this similar problems with there car AC systems.
Find the AC compressor. The pulley on it has an electric clutch that allows the compressor to run when the AC is on and not when it is off. With the engine running you should be able to see if the clutch is turning or not. The pulley turns all the time the engine is running only the clutch behind the pulley starts and stops. Look at the pulley with the AC off. Have someone turn it on and see if the clutch engages to turn the compressor. If it doesn't engage there are a couple thing that could be wrong. First the clutch has burned out and no longer works. The fuse on the AC clutch is blown. Check the fuse. More likely, if the cold air has been getting warmer, the AC system has a refrigerant leak. The system has a low pressure switch that prevents the clutch from engaging when the refrigerant pressure is too low. Jump the low pressure switch and see,if clutch is engaging or not,if not then clutch is faulty and if clutch engages the low pressure switch is faulty.

This basic details will help.

Thanks.

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For car AC related and Heater related solutions. You can refer the solutions mentioned below:---

Car AC Blows Warm Air ?

http://technoanswers.blogspot.com/2011/10/car-ac-blows-warm-air.html

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http://howtobyme.blogspot.com/2011/10/how-to-test-auto-ac-pressure.html

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http://technoanswers.blogspot.com/2011/10/auto-air-conditioning-troubleshooting.html

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http://technoanswers.blogspot.com/2011/10/auto-ac-cooling-problem.html

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http://howtobyme.blogspot.com/2011/10/how-to-fix-refrigerant-leak.html

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http://technoanswers.blogspot.com/2011/10/how-to-locate-car-ac-refrigerant-leak.html

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http://technoanswers.blogspot.com/2011/10/car-ac-intermittent-cooling.html

What causes INTERMITTENT COOLING on Car AC system?

http://technoanswers.blogspot.com/2011/10/what-causes-intermittent-cooling-on-car.html

Car AC making Noise?

http://technoanswers.blogspot.com/2011/10/car-ac-making-noise.html

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http://technoanswers.blogspot.com/2011/10/bad-odor-on-car-air-conditioner.html

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http://repairhelpcenter.blogspot.com/2011/10/how-to-recharge-cars-air-conditioner.html

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http://howtobyme.blogspot.com/2011/12/car-ac-compressor-clutch-disengages.html

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http://repairhelpcenter.blogspot.com/2011/11/how-to-inspect-vehicles-ac-compressor.html

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http://repairhelpcenter.blogspot.com/2011/11/how-to-troubleshoot-vehicles-ac-cooling.html

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