Skip the auto shop - Our mechanics make house calls

Q: Having trouble finding the low pressure valve to put the refrigerant in.

asked by on

I have looked everywhere for the low pressure valve because i need to refill the refrigerant really badly as my job is a delivery driver in the middle of Texas in the dead of summer, however, I can't find it and I am beginning to think there isn't one however I have called the Audi dealership in Dallas and the person I spoke to told me where it is but that is the High pressure valve.
My car has an automatic transmission.

If you follow the large line that goes into the firewall connection to the evaporator in the engine compartment, you will see the high pressure connection on the small line, and low side connection on the right, on the larger line.

If you would like some assistance with this, a qualified mobile technician can come to your home or office to perform an AC recharge.

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
  • Home
  • Questions
  • Having trouble finding the low pressure valve to put the refrigerant in.

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: Valve cover oil leaks

Thank you for your inquiry. The valve cover seal is a common failure item and generally and easy fix. In your case, the upper intake plenum/manifold wraps over the top of the engine and must be removed to complete the...

Q: Do I need to replace the hubs to go back to factory wheel bolts.

You're wise to go back to factory fasteners. While there are a few good quality aftermarket products out there for your car, most of the options are a kind of one-size-fits-all that involve spacers and adapters that change the design...

Q: How Much Does Using the AC Affect Fuel Economy

There are several variables that will influence the answer to that. It depends on your vehicle, how you drive, where you drive, and how hot it is outside. But there are some things that are certain: operating an A/C system...

Related articles

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...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...