Where is the a/c recharge port on my 1992 audi 100?

if your are looking for the air conditioner Freon low side port i can only assume that your trying to recharge your ac yourself. DO NOT DO IT!! i work on cars professionally. the only way to properly charge your ac is to evacuate first under vacuum to eliminate all moisture from the system. if you have any moisture in the system and you run it it will cost you thousands of dollars instead of the hundred it would cost to have a professional do it. if the Freon cans worked well mechanics would use them instead of buying thousands of dollars worth of machines to do it.

The serpentine belt routing diagram for a 1992 Audi 100 CS with 2.8 liters V6 engine


CS = Crankshaft
Gen = Alternator
G = Guide pulley
T = Tensioner pulley
AC = Air Conditioning
PAS = Power Assisted Steering

Please see my tip at http://www.fixya.com/cars/r5833579-auto_truck_c_recharge and let me know if you have questions.

high side port just beside radiator on passenger side and low side port is located on the accumulator right next to clutch cycling switch

the starter is located at the rear bottom of the engine, the nose of the starter goes into the transmission bell housing, you must access the starter from under the car.

The low pressure port is directly on the air compressor

the compressor has two hses coming out of it and one of the hoses/lines will go towads the radiator to the condeser the other will go towards the firewall,,under windshield ,this is the one with the low side service port it will be the small port on the larger line/hose the other one is a large port on a small liquid line/hose,,,,the small port is the one u will need to hiook up to ,on the large line/hose

follow the larger ac line of the to sizes until u come to a port it is the low side ,is the smaller port this is what u want

Do you have a sticker on the inside of your hood of your car? It should list the type of freon you need, if not if you have the owners manual it will give you that information also........the only thing i am obligated to ask you by law, is are you licensed to recharge the cooling system in your car? If not it is a violation of federal law for you to recharge your cooling system. You must be trained properly to do so........if you are not then you have to have it done at a garage who is licensed to do so..........

Sounds like the A/C system just needs to be recharged. When was the last time you had this done? Just take it in to your mechanic and he can do it for you and if that's not it for some reason, then he will be able to find the problem but most likely you need more freon added.

Benjamin