Air conditioning venting un-cooled air

VINCENT VANGO

MEMBER
2003 VOLKSWAGEN EUROVAN
180,000 MILES

My immediate issue is to solve an air conditioning problem. The venting works, but there is no cold air from the vents. A few weeks ago, it was cooling just fine.

Are there diagrams, schematics, drawings which show the air conditioning access and pressures?

I need to know where the air conditioning port accesses are, and the pressures required, and if new coolant is required. The last air conditioning problem, the shop I sent it to damaged my ABS system computer, so I am not inclined to send it back to them.

thanks for the help.

3 Replies

JACOBANDNICKOLAS

MECHANIC
109,885 POSTS

Hi,

First, here are the directions for vacuuming and recharging the system:

2003 Volkswagen Truck Eurovan V6-2.8L (AXK)
Evacuating and Recharging
Vehicle Heating and Air Conditioning Service and Repair Procedures A/C Refrigerant System Evacuating and Recharging
EVACUATING AND RECHARGING
A/C Refrigerant System, Evacuating And Recharging

WARNING!
- Always use an Underwriter's Laboratory (UL) approved refrigerant recovery/recycling/recharging unit such as Kent-Moore ACR4, or equivalent when evacuating and recharging an R-134a A/C system.
- Any person who services a motor vehicle air conditioner MUST, by law, be properly trained and certified and use approved refrigerant recycling equipment Technicians must complete an EPA approved recycling course to be certified.
- State and local governments may have additional requirements regarding air conditioning servicing. Always comply with state and local laws.
- Always wear safety goggles when discharging, evacuating and recharging an A/C system.

CAUTION!
Always follow manufacturer's instructions when using a refrigerant recovery/recycling/recharging unit

NOTE:
- Refer to R-134a safety measures prior to discharging or charging A/C refrigerant system.
- Follow refrigerant recovery/recycling/recharging unit manufactures instructions for evacuating and recharging A/C system.
- Evacuate refrigerant system for a minimum of 30 minutes.
- When recharging A/C system, add correct amount of refrigerant and PAG oil to system.
- After system recharge, manually rotate A/C compressor approx. 10 turns before starting engine. Start engine with A/C OFF. After idle speed has stabilized, switch A/C ON and let engine idle (compressor running) for a minimum of two minutes before raising engine speed.

________________________________

I attached a pic below that shows the system.

Here are two links you may find helpful. The first one explains how to install Freon. The second is a more detailed guide for vacuuming and recharging.

https://www.2carpros.com/articles/air-conditioner-how-to-add-freon

https://www.2carpros.com/articles/re-charge-an-air-conditioner-system

By the way, the pressures are somewhat determined by outside temperature. If you let me know the outside temperature when charging it, I can tell you where it should be.

I hope this helps. Let me know if you have other questions.

Take care,
Joe

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