Skip the auto shop - Our mechanics make house calls

Q: A/C not blowing cold

asked by on

2013 VW Jetta SE 51k miles... My ac only blows somewhat cold at high rpms .. All other times it blows HOT air. My heat works perfect. I'm assuming it's the compressor .. Would anyone agree with me? If not, what else are the possibilities
My car has an automatic transmission.

A: Hi there, thanks for writing in. Your Jet...

Hi there, thanks for writing in.

Your Jetta uses whats called a variable displacement compressor, meaning that it’s always spinning. This means you can’t simply look at the compressor and see if its running or not, as there is no clutch on it. You will need to have someone hook up a scan tool while the a/c is turned on and see if the compressor is being told to be engaged or not, also whether or not it actually is. You will also need to have a/c pressure gauges on the vehicle, and monitor the high side and low side pressures of the a/c system. Compressor failures are common on these vehicles, though you should still have a proper a/c diagnosis performed to verify the cause.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Timing chain too loose

Hello. The rattling sound that you are hearing could be coming from several different areas of the engine. Your drive belt pulley could be bad, a compressor clutch could be loose, or the alternator pulley or timing chain could be...

Q: Can I perform the service on my own BMW?

You're right in that this car is way more complicated than a GM product. But oil change and Brake fluid change are a couple of services that you should be able to perform yourself. If you choose to do that,...

Q: Had a Low Engine Pressure light and now the car won't start.

The low pressure light is your oil pressure for the engine and if you loose the oil pressure to all the internal bearings can cause major engine damage. You will need to have your engine checked to see if this...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...