The 1996 A4 Quattro only has a "high side" refrigerant port. It is located on the (right) side of the radiator ((left if you are viewing from the front - look for the refrigerant lines going in to the exchanger).
With a single port, you must evacuate the entire system and replace the refrigerant with the proper amount. Adding from the cans available at the auto parts stores will not work on the high side.
What I did was to get a low presure pipe with the valve in the junker, cut the valve leaving 1-1/2" of pipe in both sides of the valve, then I open the pipe in half, make a hole in the low pressure pipe and clamp the low valve with hose clamps, I use a rubber hose as a seal. recharge system and done. Works perfect.
at the compresser
take it to a dealer.
Both of these ports are located in the lines coming from the compressor. According to Alldata.
How do i Recharge AC Unit for a 1998 Dodge Stratus
Take it to a garage that services ac. If it needs a recharge it must have a leak in the system.
if both readings are about the same 100's most likely tou have a bad ac compressor
Look under car...look for blue c as p near compressor...
If the AC is not cold enough, go to an auto store such as pepboys and purchase an AC recharge kit. If that does not solve it, then your compressor may be bad.
Yes.
The black or silver can is the accumulator/drier, located near the firewall on the pass anger side. It has two AC hoses connected to it and a low side recharge port with a dust cap on it. Remove the dust cap (if it is still present) and connect your recharge kit to the port. When done replace the cap.
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