Question about 1996 Audi A4
I took my 96 Audi A4 to have the A/C pressure tested. The mechanic could not find a place to hook up the hi/lo pressure gauges. I found a picture on the internet that showed a newer model Audi with the hookups in the back part of the engine section, just to the right (passenger side) of the battery. They are definitely not there on my car. I did find a connection on the low pressure side of the cooler in front of the radiator, but I am not sure if it is a pressure test connection. The shop where I took the car is competent (other than this car), trustworthy, and reasonably priced; I know what other shops charge for Audi's, so I hope someone can give me some help.
The 1996 Audi A4 only has a High side refrigerant port. Right where you found it. Right side of radiator.
(Not to insult your intelligence. The passenger side of the car is the right side)
Look for the refrigerant lines going to the exchanger.
With this single port, you must evacuate the entire system, and replace the refrigerant with the proper amount.
(Obviously you can't refrigerant from cans, to the high side)
Your competent auto shop will have an evacuator, and charts to show the proper amount of refrigerant.
Posted on May 16, 2009
There is not low pressure valve, best is to empty the system find an aluminum welder and install a low pressure valve.
Posted on Jun 10, 2009
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Posted on Jan 02, 2017
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