Q: Ac system leaks

asked by on

Hi, after I pull vacuum on the ac system, I wait for about 30 minutes and the gauge doesn't change, but after I put in the refrigerant in about 3 days most of it slowly leaks out. Is that common? What would you advise?

My car has 183000 miles.
My car has an automatic transmission.

Hi there. This is common with a low pressure side leak. Sometimes when the vacuum test is set for high pressure, the excessive pressure will actually plug a very small hole on the low pressure side. When the AC system works as usual, the low pressure leak will cause the refrigerant to leak rather quickly. I would recommend having a professional mobile mechanic come to your location to complete an AC is not working inspection, so they can help you diagnose the source of your leak and recommend the right repairs.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Ac system leaks

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: Hesitates to accelerate I've tried seafoam either I didn't know what I was doing or it just didn't work.

Hesitation to accelerate can be due to spark, air, or fuel. With you vehicle being close to 10 years old, it is a good idea to do a few maintenance procedures. If you suspect the spark plugs need to be...

Q: Where is the ambient air temperature sensor located in a 94 Lincoln town car

The ambient air temperature sensor is located in front of the a/c condenser in the center of the vehicle mounted just below the hood latch on the support bracket. The sensor will give temperature reading s from about -40 to...

Q: Loss of power when gas pedal is pressed all the way down, but only when the car is warm.

This may be a sign of a faulty ignition coil. Ignition coils are coated with a varnish-like insulation that becomes brittle over time after being stretched then contracted repeatedly. The insulation develops small fractures that open when heated and close...

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...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...